10-Q

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

WASHINGTON, D.C. 20549

FORM 10-Q

x QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934

For the quarterly period ended September 30, 2013

or

¨ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934

For the transition period from to

Commission File Number: 1-33409

T-MOBILE US, INC.

(Exact name of registrant as specified in its charter)

DELAWARE	20-0836269
(State or other jurisdiction of incorporation or organization)	(I.R.S. Employer Identification No.)
12920 SE 38th Street, Bellevue, Washington	98006-1350
(Address of principal executive offices)	(Zip Code)
(425) 378-4000
(Registrant’s telephone number, including area code)

Indicate by check mark whether the registrant (1) has filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during the preceding 12 months (or for such shorter period that the registrant was required to file such reports), and (2) has been subject to such filing requirements for the past 90 days. Yes x No ¨

Indicate by check mark whether the registrant has submitted electronically and posted on its corporate Web site, if any, every Interactive Data File required to be submitted and posted pursuant to Rule 405 of Regulation S-T (§232.405 of this chapter) during the preceding 12 months (or for such shorter period that the registrant was required to submit and post such files). Yes x No ¨

Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, or a smaller reporting company. See the definitions of large accelerated filer, accelerated filer and smaller reporting company in Rule 12b-2 of the Exchange Act.

Large accelerated filer     x                        Accelerated filer             ¨

Non-accelerated filer     ¨ (Do not check if a smaller reporting company)     Smaller reporting company     ¨

Indicate by check mark whether the registrant is a shell company (as defined in Rule 12b-2 of the Exchange Act).

Yes ¨ No x

Indicate the number of shares outstanding of each of the issuer’s classes of common stock, as of the latest practicable date.

Class	Shares Outstanding as of October 31, 2013
Common Stock, $0.00001 par value per share	728,696,706

T-Mobile US, Inc.

Form 10-Q

For the Quarter Ended September 30, 2013

Table of Contents

PART I. FINANCIAL INFORMATION
Item 1.	Financial Statements	3
	Condensed Consolidated Balance Sheets	3
	Condensed Consolidated Statements of Comprehensive Income (Loss)	4
	Condensed Consolidated Statements of Cash Flows	5
	Condensed Consolidated Statement of Stockholders' Equity	6
	Notes to the Condensed Consolidated Financial Statements	7
Item 2.	Management's Discussion and Analysis of Financial Condition and Results of Operations	34
Item 3.	Quantitative and Qualitative Disclosures About Market Risk	50
Item 4.	Controls and Procedures	51
PART II. OTHER INFORMATION
Item 1.	Legal Proceedings	52
Item 1A.	Risk Factors	52
Item 2.	Unregistered Sales of Equity Securities and Use of Proceeds	52
Item 3.	Defaults Upon Senior Securities	52
Item 4.	Mine Safety Disclosures	52
Item 5.	Other Information	52
Item 6.	Exhibits	53
SIGNATURE		54

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PART I. FINANCIAL INFORMATION

Item 1. Financial Statements

T-Mobile US, Inc.

Condensed Consolidated Balance Sheets

(Unaudited)

(in millions, except share and per share amounts)	September 30, 2013			December 31, 2012
Assets
Current assets
Cash and cash equivalents	$	2,365		$	394
Accounts receivable, net of allowances for uncollectible accounts of $330 and $289	3,370			2,678
Accounts receivable from affiliates	19			682
Inventory	761			457
Current portion of deferred tax assets, net	773			655
Other current assets	676			675
Total current assets	7,964			5,541
Property and equipment, net of accumulated depreciation of $19,320 and $17,744	15,370			12,807
Goodwill	1,683			—
Spectrum licenses	18,414			14,550
Other intangible assets, net of accumulated amortization of $404 and $243	1,297			79
Investments in unconsolidated affiliates	55			63
Long-term investments	36			31
Other assets	948			551
Total assets	$	45,767		$	33,622
Liabilities and Stockholders' Equity
Current liabilities
Accounts payable and accrued liabilities	$	4,324		$	3,475
Current payables to affiliates	305			1,619
Short-term debt	195			—
Deferred revenue	447			290
Other current liabilities	243			208
Total current liabilities	5,514			5,592
Long-term payables to affiliates	11,200			13,655
Long-term debt	6,761			—
Long-term financial obligation	2,488			2,461
Deferred tax liabilities	4,695			3,618
Deferred rents	2,062			1,884
Other long-term liabilities	632			297
Total long-term liabilities	27,838			21,915
Commitments and contingencies
Stockholders' equity
Preferred stock, par value $0.00001 per share, 100,000,000 shares authorized; no shares issued and outstanding	—			—
Common stock, par value $0.00001 per share, 1,000,000,000 shares authorized; 729,526,906 and 535,286,077 shares issued, 728,144,401 and 535,286,077 shares outstanding	—			—
Additional paid-in capital	35,481			29,197
Treasury stock, at cost, 1,382,505 and 0 shares issued	—			—
Accumulated other comprehensive income	2			41
Accumulated deficit	(23,068		)	(23,123		)
Total stockholders' equity	12,415			6,115
Total liabilities and stockholders' equity	$	45,767		$	33,622

The accompanying notes are an integral part of these condensed consolidated financial statements.

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T-Mobile US, Inc.

Condensed Consolidated Statements of Comprehensive Income (Loss)

(Unaudited)

	Three Months Ended September 30,						Nine Months Ended September 30,
(in millions, except shares and per share amounts)	2013			2012			2013			2012
Revenues
Branded postpaid revenues	$	3,302		$	3,571		$	9,849		$	11,105
Branded prepaid revenues	1,594			450			3,339			1,241
Wholesale revenues	157			134			449			407
Roaming and other service revenues	85			106			262			333
Total service revenues	5,138			4,261			13,899			13,086
Equipment sales	1,467			554			3,452			1,524
Other revenues	83			78			242			200
Total revenues	6,688			4,893			17,593			14,810
Operating expenses
Network costs	1,444			1,141			3,880			3,515
Cost of equipment sales	2,015			866			4,837			2,456
Customer acquisition	1,039			823			2,804			2,323
General and administrative	894			840			2,482			2,681
Depreciation and amortization	987			825			2,630			2,391
MetroPCS transaction and integration costs	12			—			51			—
Impairment charges	—			8,134			—			8,134
Restructuring costs	—			36			54			90
Other, net	—			(179		)	(2		)	(136		)
Total operating expenses	6,391			12,486			16,736			21,454
Operating income (loss)	297			(7,593		)	857			(6,644		)
Other income (expense)
Interest expense to affiliates	(183		)	(165		)	(586		)	(487		)
Interest expense	(151		)	—			(311		)	—
Interest income	50			20			125			53
Other income (expense), net	(7		)	15			105			22
Total other expense, net	(291		)	(130		)	(667		)	(412		)
Income (loss) before income taxes	6			(7,723		)	190			(7,056		)
Income tax expense	42			12			135			272
Net income (loss)	$	(36	)	$	(7,735	)	$	55		$	(7,328	)
Other comprehensive income (loss), net of tax
Net gain on cross currency interest rate swaps, net of tax effect of $0, $36, $13 and $10	—			60			23			17
Net gain (loss) on foreign currency translation, net of tax effect of $0, $(22), $(37) and $2	—			(37		)	(62		)	2
Unrealized gain on available-for-sale securities, net of tax effect of $0, $0, $0 and $0	—			1			—			—
Other comprehensive income (loss), net of tax	—			24			(39		)	19
Total comprehensive income (loss)	$	(36	)	$	(7,711	)	$	16		$	(7,309	)
Earnings (loss) per share
Basic	$	(0.05	)	$	(14.45	)	$	0.09		$	(13.69	)
Diluted	(0.05		)	(14.45		)	0.09			(13.69		)
Weighted average shares outstanding
Basic	726,877,458			535,286,077			642,957,645			535,286,077
Diluted	726,877,458			535,286,077			645,520,524			535,286,077

The accompanying notes are an integral part of these condensed consolidated financial statements.

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T-Mobile US, Inc.

Condensed Consolidated Statements of Cash Flows

(Unaudited)

	Nine Months Ended September 30,
(in millions)	2013			2012
Operating activities
Net cash provided by operating activities	$	2,541		$	2,707
Investing activities
Purchases of property and equipment	(3,143		)	(2,003		)
Purchases of intangible assets	(52		)	(379		)
Short term affiliate loan receivable, net	300			(297		)
Cash and cash equivalents acquired in MetroPCS business combination	2,144			—
Change in restricted cash equivalents	(100		)	—
Investments in unconsolidated affiliates, net	(22		)	16
Other, net	5			(4		)
Net cash used in investing activities	(868		)	(2,667		)
Financing activities
Proceeds from issuance of long-term debt	498			—
Repayments of short-term debt for purchases of property and equipment	(194		)	—
Repayments related to a variable interest entity	(80		)	—
Distribution to affiliate as a result of debt recapitalization	(41		)	—
Proceeds from exercise of stock options	116			—
Excess tax benefit from stock-based compensation	4			—
Other, net	(5		)	—
Net cash provided by financing activities	298			—
Change in cash and cash equivalents	1,971			40
Cash and cash equivalents
Beginning of period	394			390
End of period	$	2,365		$	430

The accompanying notes are an integral part of these condensed consolidated financial statements.

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T-Mobile US, Inc.

Condensed Consolidated Statement of Stockholders’ Equity

(Unaudited)

	Shares		Par Value and Additional Paid-in Capital		Accumulated Other Comprehensive Income			Accumulated Deficit			Total Stockholders' Equity
(in millions, except shares)	Common Stock	Treasury Stock
Balance as of December 31, 2012	535,286,077	—	$	29,197	$	41		$	(23,123	)	$	6,115
Net income	—	—	—		—			55			55
Other comprehensive loss	—	—	—		(39		)	—			(39		)
Effects of debt recapitalization	—	—	3,143		—			—			3,143
MetroPCS shares converted upon reverse merger, net of treasury stock withheld for taxes	184,487,309	1,382,505	2,971		—			—			2,971
Stock-based compensation	—	—	54		—			—			54
Exercise of stock options and restricted stock units vested and issued	8,371,015	—	116		—			—			116
Balance as of September 30, 2013	728,144,401	1,382,505	$	35,481	$	2		$	(23,068	)	$	12,415

The accompanying notes are an integral part of these condensed consolidated financial statements.

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T-Mobile US, Inc.

Notes to the Condensed Consolidated Financial Statements

(Unaudited)

Note 1 – Consolidation and Basis of Presentation

The accompanying unaudited condensed consolidated financial statements include the balances and results of operations of T-Mobile US, Inc. and its consolidated subsidiaries, collectively “T-Mobile” or the “Company”. T-Mobile consolidates all majority-owned subsidiaries over which it exercises control, as well as variable interest entities where it is deemed to be the primary beneficiary and variable interest entities which cannot be deconsolidated. Intercompany transactions and balances have been eliminated in consolidation.

The condensed consolidated financial statements fairly present the financial position and results of operations in accordance with accounting principles generally accepted in the United States of America (“GAAP”) and, in the opinion of management, reflect all adjustments of a normal recurring nature necessary for a fair presentation of the Company’s results for the periods presented. The condensed consolidated financial statements are unaudited and should be read in conjunction with the audited Consolidated Financial Statements for the three years ended December 31, 2012, included in the Current Report on Form 8-K filed on June 18, 2013.

The preparation of financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the amounts reported in the financial statements and accompanying notes, including estimates of probable losses and expenses. Actual results could differ from those estimates.

On April 30, 2013, the business combination involving T-Mobile USA, Inc. (“T-Mobile USA”) and MetroPCS Communications, Inc. (“MetroPCS”) was completed. In connection with the business combination, MetroPCS acquired all of the outstanding capital stock of T-Mobile USA beneficially owned by Deutsche Telekom AG (“Deutsche Telekom”) in consideration for the issuance of shares of common stock representing approximately 74% of the fully diluted shares of the combined entity. MetroPCS was subsequently renamed T-Mobile US, Inc. and is the consolidated parent of the Company’s subsidiaries, including T-Mobile USA. The business combination was accounted for as a reverse acquisition with T-Mobile USA as the accounting acquirer. Accordingly, T-Mobile USA’s historical financial statements became the historical financial statements of the combined company. The common shares outstanding and earnings (loss) per share presented for periods up to April 30, 2013 reflect the common shares issued to T-Mobile Global Holding GmbH (“T-Mobile Holding”), an indirect wholly-owned subsidiary of Deutsche Telekom, in connection with the reverse acquisition. SeeNote 2 – Transaction with MetroPCS for further information.

Segments

T-Mobile operates as a single operating segment and a single reporting unit. As of September 30, 2013 and December 31, 2012, and for the three and nine months endedSeptember 30, 2013 and 2012, all of T-Mobile’s long-lived assets and revenues related to operations in the United States, Puerto Rico and the U.S. Virgin Islands.

Cash and Cash Equivalents

Cash equivalents, including those acquired through the business combination with MetroPCS, consist of highly liquid interest-earning investments with remaining maturities of three months or less at the date of purchase. Cash equivalents are stated at cost, which approximates fair value.

T-Mobile is required to restrict cash equivalents as collateral for certain agreements. Cash equivalents with use restrictions of less than twelve months are classified as current. Restricted cash equivalents included in other current assets were $100 million as of September 30, 2013. There were no restricted cash equivalents as of December 31, 2012.

Goodwill

Goodwill consists of the excess of the purchase price over the fair value of net identifiable assets acquired in a business combination. The Company assesses the carrying value of its goodwill for potential impairment annually as of December 31 or more frequently if events or changes in circumstances indicate that such assets might be impaired. 

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Other Intangible Assets

Intangible assets that have finite useful lives are amortized over their useful lives. Customer lists are primarily amortized using the sum-of-the-years-digits method over the expected period in which the relationship is expected to contribute to future cash flows. The remaining finite-lived intangible assets are generally amortized using the straight-line method.

Guarantee Liabilities

T-Mobile offers a handset upgrade program that provides eligible customers a specified-price trade-in right to upgrade their handset, up to twice a year following completion of an initial six-month enrollment period. Participating customers must finance their handset using an equipment installment plan (“EIP”). Upon upgrading, the customer will receive a credit in the amount of the outstanding EIP balance provided they trade in their used handset to purchase a new handset from T-Mobile.

For customers who enroll in the trade-in programs, the Company defers the portion of equipment sales revenue which represents the estimated value of the specified-price trade-in right guarantee. The guarantee liabilities are valued based on various economic and customer behavioral assumptions, including the customer's estimated remaining EIP balance at trade-in, the expected fair value of the used handset at trade-in, and the trade-in probability for each month over the term of the EIP. The guarantee is recognized as equipment sales when the customer upgrades their handset or T-Mobile is otherwise relieved of its performance obligation. Guarantee liabilities included in other current liabilities were $90 million as of September 30, 2013. There were no guarantee liabilities as of December 31, 2012 as the program was introduced in the third quarter of 2013.

Stock-Based Compensation

Stock-based compensation cost for stock awards, which include restricted stock units (“RSUs”) and performance stock units (“PSUs”), is measured at fair value on the grant date and recognized as expense, net of expected forfeitures, over the related service period. The fair value of stock awards is based on the closing price of T-Mobile common stock on the date of grant. RSUs are recognized as expense using the straight-line method. PSUs are recognized as expense following a graded vesting schedule.

Earnings (Loss) Per Share

Basic earnings (loss) per share is computed based on the weighted-average number of common shares outstanding for the period. Diluted earnings (loss) per share is computed based on the weighted-average number of common shares outstanding for the period plus the effect of dilutive potential common shares outstanding during the period, calculated using the treasury stock method. Dilutive potential common shares consist of outstanding stock options, RSU and PSU awards.

Note 2 – Transaction with MetroPCS

Transaction Overview

On October 3, 2012, Deutsche Telekom, T-Mobile Global Zwischenholding GmbH, a direct wholly-owned subsidiary of Deutsche Telekom (“T-Mobile Global”), T-Mobile Holding, a direct wholly-owned subsidiary of T-Mobile Global, T-Mobile USA and MetroPCS entered into a Business Combination Agreement (“BCA”) for the business combination of T-Mobile USA and MetroPCS, which was subsequently amended on April 14, 2013. The business combination was intended to provide the Company with expanded scale, spectrum, and financial resources to compete aggressively with other larger U.S. wireless carriers. The stockholders of MetroPCS approved the business combination on April 24, 2013, and the transaction closed on April 30, 2013 (“Acquisition Date”).

The transaction was accounted for as a reverse acquisition under the acquisition method of accounting with T-Mobile USA considered to be the accounting acquirer based upon the terms and conditions set forth in the BCA, including the ability of T-Mobile USA’s stockholder, Deutsche Telekom, to nominate a majority of the board of directors of the Company and Deutsche Telekom’s receipt of shares representing a majority of the outstanding voting power of the Company. Based on the determination that T-Mobile USA was the accounting acquirer in the transaction, the Company has allocated the preliminary purchase price to the fair value of MetroPCS’s assets and liabilities as of the Acquisition Date, with the excess preliminary purchase price recorded as goodwill.

Accordingly, the acquired assets and liabilities of MetroPCS are included in the Company’s condensed consolidated balance sheets as of September 30, 2013 and the results of its operations and cash flows are included in the Company’s condensed

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consolidated statements of comprehensive income (loss) and cash flows for the period from May 1, 2013 through September 30, 2013.

Pursuant to the terms and the conditions as set forth in the BCA:

• Deutsche Telekom recapitalized T-Mobile USA by retiring T-Mobile USA’s notes payable to affiliates principal balance of $14.5 billion and all related derivative instruments in exchange for $11.2 billion in new notes payable to affiliates and additional paid-in capital prior to the closing of the business combination.

• Deutsche Telekom provided T-Mobile USA with a $500 million unsecured revolving credit facility.

• MetroPCS effected a recapitalization which consisted of a reverse stock split of the MetroPCS common stock and an aggregate cash payment of $1.5 billion to the MetroPCS stockholders on the Acquisition Date.

• Thereafter, MetroPCS acquired all of T-Mobile USA’s capital stock from T-Mobile Holding in exchange for common stock representing approximately 74% of the fully diluted shares of the combined entity’s common stock on the Acquisition Date.

Debt Recapitalization

In connection with the recapitalization of T-Mobile USA, certain outstanding balances with Deutsche Telekom were settled prior to the closing of the business combination. The debt recapitalization was accounted for as a debt extinguishment with the effects being treated as a capital transaction. The effects on additional paid-in capital as a result of the debt recapitalization are presented in the following table:

(in millions)	Debt Recapitalization
Retirement of notes payable to affiliates	$	14,450
Elimination of net unamortized discounts and premiums on notes payable to affiliates	434
Issuance of new notes payable to affiliates	(11,200		)
Settlement of accounts receivable from affiliates and other outstanding balances	(363		)
Income tax effect	(178		)
Total	$	3,143

Reverse Stock Split

On April 30, 2013, as contemplated by the BCA, the Company amended and restated its existing certificate of incorporation in its entirety in the form of the Fourth Amended and Restated Certificate of Incorporation to, among other things, effect a reverse stock split of MetroPCS’ common stock, and change its name to T-Mobile US, Inc. On the Acquisition Date, the Company issued to T-Mobile Holding 535,286,077 shares of common stock in exchange for T-Mobile Holding transferring to the Company all of its rights, title and interest in and to all the equity interests of T-Mobile USA. After giving effect to this transaction, the shares of the Company’s common stock issued to T-Mobile Holding represented approximately 74% of the fully diluted shares of the Company’s common stock on the Acquisition Date. Immediately prior to the Acquisition Date, each issued share of MetroPCS was reverse split, and at consummation of the business combination each issued share was canceled and converted into shares of the Company’s stock totaling 184,487,309 shares of common stock, exclusive of 1,382,505 shares in treasury.

Consideration Transferred

The fair value of the consideration transferred in a reverse acquisition was determined based on the number of shares the accounting acquirer (T-Mobile USA, the legal acquiree) would have had to issue to the stockholders of the accounting acquiree (MetroPCS, the legal acquirer) in order to provide the same ratio of ownership in the combined entity (approximately 26%) as a result of the transaction. The fair value of the consideration transferred was based on the most reliable measure, which was determined to be the market price of MetroPCS shares as of the Acquisition Date.  

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The fair value of the consideration transferred, based on the market price of MetroPCS shares on the Acquisition Date, consisted of the following:

(in millions)	Purchase Consideration
Fair value of MetroPCS shares	$	2,886
Fair value of MetroPCS stock options	84
Cash consideration paid to MetroPCS stock option holders	1
Total purchase consideration	$	2,971

The fair value of the MetroPCS shares was determined by using the closing price of MetroPCS common stock on the New York Stock Exchange on the Acquisition Date, prior to giving effect to the reverse stock split, of $11.84 per share, adjusted by the $4.05 per share impact of the $1.5 billion cash payment, which was a return of capital to the MetroPCS stockholders made as part of the recapitalization prior to the stock issuance to T-Mobile Holding. This resulted in an adjusted price of $7.79 per share unadjusted for the effects of the reverse stock split.

Pursuant to the BCA, unvested MetroPCS stock options and shares of restricted stock immediately vested as of the closing of the business combination and were adjusted to give effect to the recapitalization. Holders of stock options for which the exercise price was less than the average closing price of MetroPCS’s common stock for the five days preceding the closing (“in-the-money options”) had the right to receive, at their election, a cash payment based on the amount by which the average closing price exceeded the exercise price of the options. In-the-money options held by holders who made this election were canceled. Finally, stock options with low exercise prices, as defined in the BCA, were canceled in exchange for cash consideration.

Purchase Price Allocation

As T-Mobile USA was the accounting acquirer in the business combination, it has allocated the preliminary purchase price to the MetroPCS individually identifiable assets acquired and liabilities assumed based on their estimated fair values on the Acquisition Date. The excess of the preliminary purchase price over those fair values was recorded as goodwill. The determination of the preliminary fair values of the acquired assets and assumed liabilities requires significant judgment, including estimates relating to the decommissioning of network cell sites, the determination of estimated lives of depreciable and intangible assets and the calculation of the value of spectrum licenses, customer lists, and trademarks. Accordingly, should additional information become available, the preliminary purchase price allocation is subject to further adjustment.

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The following table summarizes the allocation of the preliminary purchase price:

(in millions)	Preliminary Fair Value
Assets
Cash and cash equivalents	$	2,144
Accounts receivable, net	98
Inventory	171
Other current assets	240
Property and equipment	1,475
Spectrum licenses	3,818
Other intangible assets	1,376
Other assets	10
Total assets acquired	9,332
Liabilities and Stockholders’ Equity
Accounts payable and accrued liabilities	475
Deferred revenues	187
Other current liabilities	15
Deferred tax liabilities	735
Long-term debt	6,277
Other long-term liabilities	355
Total liabilities assumed	8,044
Net identifiable assets acquired	1,288
Goodwill	1,683
Net assets acquired	$	2,971

The goodwill recognized was attributable primarily to expected synergies from combining the businesses of T-Mobile USA and MetroPCS, including, but not limited to, the following:

• Expected cost synergies from reduced network-related expenses through the elimination of redundant assets.

• Enhanced spectrum position which will provide greater network coverage and improved 4G LTE coverage in key markets across the country and the ability to offer a wider array of products, plans and services to the Company’s customers.

None of the goodwill is deductible for income tax purposes.

The Company recognized transaction and integration costs of $12 million and $51 million for the three and nine months endedSeptember 30, 2013, respectively. This includes personnel-related change in control, transaction and other acquisition-related charges.  These costs are included in MetroPCS transaction and integration costs in the condensed consolidated statements of comprehensive income (loss).

Condensed Consolidated Statements of Comprehensive Income (Loss) for MetroPCS Operations

The following supplemental information presents the financial results of MetroPCS operations included in the condensed consolidated statements of comprehensive income (loss) since May 1, 2013 for the three and nine months endedSeptember 30, 2013:

(in millions)	Three Months Ended September 30, 2013		Nine Months Ended September 30, 2013
Total revenues	$	1,273	$	2,072
Income before income taxes	87		103

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Pro Forma Financial Information

The following pro forma consolidated results of net income for the nine months endedSeptember 30, 2013 and 2012 assume the business combination was completed as of January 1, 2012, respectively:

	Nine Months Ended September 30,
(in millions, except per share amounts)	2013		2012
Pro forma revenues	$	19,331	$	18,720
Pro forma net income (loss)	57		(7,283		)
Pro forma basic earnings (loss) per share	$	0.08	$	(10.13	)
Pro forma diluted earnings (loss) per share	0.08		(10.13		)

The pro forma amounts include the historical operating results of T-Mobile USA and MetroPCS prior to the business combination, with adjustments directly attributable to the business combination relating to purchase accounting adjustments to conform to accounting policies that affect total revenues, total operating expenses, interest expense, other income (expense), income taxes expense, and eliminate intercompany activities.

As the pro forma amounts assumed the business combination was completed as of January 1, 2012, pro forma earnings for the nine months endedSeptember 30, 2013 excluded $205 million of transaction and integration costs and these costs were included in the pro forma earnings for the nine months endedSeptember 30, 2012.

The pro forma results include the following:

• Increase in tax expenses based on the inclusion of MetroPCS in the combined company of $54 million for the nine months endedSeptember 30, 2013 and a decrease of $194 million for the nine months endedSeptember 30, 2012;

• Net decrease to amortization and depreciation expense related to the fair value of the intangible assets and fixed assets acquired of $3 million for the nine months endedSeptember 30, 2013 and a net increase of $137 million for the nine months endedSeptember 30, 2012, respectively; and

• The impact of financing agreements entered into whereby an aggregate of $14.7 billion senior unsecured notes were issued and $14.5 billion of senior unsecured notes previously issued by T-Mobile USA to Deutsche Telekom and $2.5 billion of senior unsecured notes previously issued by MetroPCS were retired in connection with the business combination for a net increase to interest and other income (expense) of $91 million and $107 million for the nine months endedSeptember 30, 2013 and 2012, respectively.

Note 3 – Equipment Installment Plan Receivables

T-Mobile offers certain retail customers the option to pay for their devices and other purchases in installments over a period of up to 24 months. At the time of sale, T-Mobile imputes risk adjusted interest on the installment receivables and records the deferred interest as a reduction to equipment revenues and the related accounts receivable. Interest income is recognized over the financed installment term. The current portion of T-Mobile’s equipment installment plan receivables included in accounts receivable, net was $1.1 billion and $475 million as of September 30, 2013 and December 31, 2012, respectively. The long-term portion of the equipment installment plan receivables included in other assets was $750 million and $216 million as of September 30, 2013 and December 31, 2012, respectively.

Credit Quality

T-Mobile assesses the collectability of the equipment installment plan receivables based upon a variety of factors, including aging of the accounts receivable portfolio, credit quality of the customer base, historical write-off experience, payment trends and other qualitative factors such as macro-economic conditions.

Based upon customer credit profiles, T-Mobile classifies customer receivables into the categories of “Prime” and “Subprime”. Prime customer receivables are those with lower delinquency risk and Subprime customer receivables are those with higher delinquency risk. Some customers within the Subprime category are required to pay an advance deposit for equipment financed under the equipment installment plan or may be required to pay a higher down payment on the equipment purchase. Equipment sales that are not reasonably assured to be collectible are recorded on a cash basis as payments are received.

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The balance and aging of the equipment installment plan receivables on a gross basis by credit category were as follows:

	September 30, 2013						December 31, 2012
	Credit Category						Credit Category
(in millions)	Prime		Subprime		Total		Prime		Subprime		Total
Unbilled	$	1,084	$	953	$	2,037	$	337	$	432	$	769
Billed - Current	35		39		74		13		21		34
Billed - Past due	11		20		31		3		10		13
Equipment installment plan receivables, gross	$	1,130	$	1,012	$	2,142	$	353	$	463	$	816

T-Mobile records equipment installment bad debt expense based on an estimate of the percentage of equipment revenue that will not be collected. This estimate was based on a number of factors including historical write-off experience, credit quality of the customer base, and other factors such as macro-economic conditions. T-Mobile monitors the aging of its equipment installment plan receivables and writes off account balances if collection efforts were unsuccessful and future collection was unlikely based on customer credit ratings and the length of time from the original billing date.

Activity in the allowance for credit losses for the equipment installment plan receivables was as follows:

(in millions)	September 30, 2013
Allowance, December 31, 2012	$	125
Change in deferred interest on short-term and long-term installment receivables	112
Bad debt expense	118
Write-offs	(79		)
Allowance, September 30, 2013	$	276

The allowance for credit losses includes deferred interest of $222 million and $110 million as of September 30, 2013 and December 31, 2012, respectively.

Note 4 – Property and Equipment

The components of property and equipment were as follows:

(in millions)	Useful Lives	September 30, 2013			December 31, 2012
Buildings and improvements	Up to 40 years	$	695		$	676
Wireless communications systems	2 - 20 years	23,908			21,147
Capitalized software	2 - 7 years	6,198			5,078
Equipment and furniture	2 - 5 years	2,286			1,991
Construction in progress		1,603			1,659
Accumulated depreciation and amortization		(19,320		)	(17,744		)
Property and equipment, net		$	15,370		$	12,807

Buildings and improvements, wireless communication systems, capitalized software, equipment and furniture, including assets with retirement obligations, and construction-in-progress include $14 million, $960 million, $162 million, $268 million, and $71 million, respectively, based on preliminary fair values, acquired through the business combination with MetroPCS. See Note 2 – Transaction with MetroPCS for further information.

Note 5 – Goodwill, Spectrum Licenses and Intangible Assets

Goodwill and Spectrum Licenses

Carrying values of goodwill and spectrum licenses were as follows:

(in millions)	September 30, 2013		December 31, 2012
Goodwill	$	1,683	$	—
Spectrum licenses	18,414		14,550

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Goodwill and spectrum licenses include $1.7 billion and $3.8 billion, respectively, based on preliminary fair values, acquired through the business combination with MetroPCS. See Note 2 – Transaction with MetroPCS for further information.

Other Intangible Assets

The components of intangible assets were as follows:

(in millions)	Useful Lives	September 30, 2013			December 31, 2012
Customer lists	1 - 6 years	$	1,313		$	209
Trademarks	1 - 8 years	291			55
Other	Up to 28 years	97			58
Accumulated amortization		(404		)	(243		)
Other intangible assets, net		$	1,297		$	79

Customer lists, trademarks and other intangible assets include $1.1 billion, $233 million and $39 million respectively, based on preliminary fair values, related to the business combination with MetroPCS. See Note 2 – Transaction with MetroPCS for further information. Estimated aggregate future amortization expense for intangible assets subject to amortization are $92 million for the three months ended December 31, 2013, $333 million in 2014, $278 million in 2015, $222 million in 2016, $163 million in 2017 and $209 million thereafter.

Note 6 – Fair Value Measurements and Derivative Instruments

T-Mobile accounts for certain assets and liabilities at fair value. Fair value is a market-based measurement which is determined based on assumptions that market participants would use in pricing an asset or liability. As a basis for considering such assumptions, T-Mobile uses the three-tiered fair value hierarchy, which prioritizes the inputs used in measuring fair value as follows:

Level 1 Observable inputs that reflect quoted prices in active markets for identical assets or liabilities;

Level 2 Inputs other than the quoted prices in active markets that are observable either directly or indirectly; and

Level 3 Unobservable inputs for which there is little or no market data, which require T-Mobile to develop its own assumptions.

T-Mobile uses observable market data, when available. Assets and liabilities measured at fair value included interest rate swaps, cross currency interest rate swaps designated as cash flow hedges, and investments and obligations related to T-Mobile’s nonqualified deferred compensation plan.

Interest Rate Swaps

Prior to the closing of the business combination, T-Mobile managed interest rate risk related to its notes payable to affiliates by entering into interest rate swap agreements. T-Mobile held seven interest rate swaps with a total notional amount of $3.6 billion as of December 31, 2012. These interest rate swap agreements were not designated as hedging instruments and changes in fair value related to such agreements were recognized in interest expense to affiliates.

Interest rate swaps were valued using discounted cash flow techniques. These techniques incorporated market-based observable inputs such as interest rates and credit spreads, considering each instrument’s term, notional amount, discount rate and credit risk. T-Mobile’s interest rate swaps were classified as Level 2 in the fair value hierarchy.

Prior to the closing of the business combination with MetroPCS, Deutsche Telekom recapitalized T-Mobile by retiring the existing T-Mobile notes payable to affiliates and all related derivative instruments, which included the interest rate swaps. The related balance in accumulated other comprehensive income was reclassified into net income (loss). As of September 30, 2013, there were no outstanding interest rate swaps.

Cross Currency Interest Rate Swaps

Prior to the closing of the business combination, T-Mobile managed foreign currency risk along with interest rate risk through cross currency interest rate swap agreements related to its intercompany Euro denominated notes payable to affiliates, which were entered into upon assumption of the notes to fix the future interest and principal payments in U.S. dollars, as well as to mitigate the impact of foreign currency transaction gains or losses over the terms of the notes payable to affiliates extending to

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2025. T-Mobile had three cross currency interest rate swaps with a total notional amount of $2.3 billion as of December 31, 2012. These cross currency interest rate swaps were designated as cash flow hedges and met the criteria for hedge accounting. As a result, the change in fair value was recorded in other comprehensive income (loss) and reclassified to interest expense to affiliates in the period in which the hedged transaction affected earnings. T-Mobile evaluated hedge effectiveness at the inception of the hedge prospectively, as well as retrospectively, and at the end of each reporting period. The hedges were evaluated as highly effective prior to the closing of the business combination with MetroPCS, thus no gain (loss) has been recognized due to hedge ineffectiveness.

Cross currency interest rate swaps were valued using discounted cash flow techniques. These techniques incorporated market-based observable inputs such as interest rates and credit spreads, considering each instrument’s term, notional amount, discount rate and credit risk. T-Mobile’s cross currency interest rate swaps were classified as Level 2 in the fair value hierarchy.

Prior to the closing of the business combination with MetroPCS, Deutsche Telekom recapitalized T-Mobile by retiring the existing T-Mobile notes payable to affiliates and all related derivative instruments, which included cross currency interest rate swaps. The related balance in accumulated other comprehensive income was reclassified into net income (loss). As of September 30, 2013, there were no outstanding cross currency interest rate swaps.

Nonqualified Deferred Compensation Plan

T-Mobile’s nonqualified deferred compensation plan includes available for sale securities and obligations, which are valued using quoted market prices in active markets or broker-dealer quotations. The nonqualified deferred compensation plan assets and liabilities are classified as Level 1 in the three‑tier value hierarchy.

Fair Value of Financial Instruments

Fair value of financial instruments measured on a recurring basis by level were as follows:

	Balance Sheet Location	September 30, 2013
(in millions)		Level 1		Level 2		Level 3		Total
Assets
Nonqualified deferred compensation	Long-term investments	$	34	$	—	$	—	$	34
Liabilities
Nonqualified deferred compensation	Other long-term liabilities	34		—		—		34

	Balance Sheet Location	December 31, 2012
(in millions)		Level 1		Level 2		Level 3		Total
Assets
Interest rate swaps	Other current assets	$	—	$	106	$	—	$	106
Cross currency interest rate swaps	Other assets	—		144		—		144
Nonqualified deferred compensation	Long-term investments	31		—		—		31
Liabilities
Nonqualified deferred compensation	Other long-term liabilities	31		—		—		31

The following table summarizes the activity related to derivatives instruments:

	Three Months Ended September 30,				Nine Months Ended September 30,
(in millions)	2013		2012		2013			2012
Gain (loss) recognized in other comprehensive income (loss):
Cross currency interest rate swaps	$	—	$	92	$	(17	)	$	15
Gain recognized in interest expense to affiliates:
Interest rate swaps	—		28		8			74
Cross currency interest rate swaps	—		4		53			11

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Notes Payable to Affiliates and Long-term Debt

See Note 7 – Notes Payable to Affiliates and Debt for the fair value of T-Mobile’s notes payable to affiliates and long-term debt.

Note 7 – Notes Payable to Affiliates and Debt

Notes Payable to Affiliates

Prior to the closing of the business combination with MetroPCS, Deutsche Telekom recapitalized T-Mobile by retiring its notes payable to affiliates principal balance of $14.5 billion in exchange for new senior unsecured notes in an aggregate principal amount of $11.2 billion. Further, in October 2013, Deutsche Telekom sold an aggregate principal amount of $5.6 billion of the senior unsecured notes to third parties. See Note 14 – Subsequent Events for further information.

Notes payable to affiliates as of September 30, 2013 were as follows:

(in millions)	September 30, 2013
6.464% Senior Notes due 2019	$	1,250
5.578% Senior Reset Notes due 2019 (reset date in April 2015 )	1,250
6.542% Senior Notes due 2020	1,250
5.656% Senior Reset Notes due 2020 (reset date in April 2015)	1,250
6.633% Senior Notes due 2021	1,250
5.747% Senior Reset Notes due 2021 (reset date in October 2015)	1,250
6.731% Senior Notes due 2022	1,250
5.845% Senior Reset Notes due 2022 (reset date in October 2015)	1,250
6.836% Senior Notes due 2023	600
5.950% Senior Reset Notes due 2023 (reset date in April 2016)	600
Total notes payables to affiliates	$	11,200

Interest on the Senior Notes and Senior Reset Notes, collectively the notes payable to affiliates, is accrued from the date of issuance at stated interest rates and paid semi-annually. The interest rates on the Senior Reset Notes are adjusted at the reset dates to rates defined in the applicable supplemental indenture. The notes payable to affiliates may be redeemed, in whole, or from time to time in part, subject to the conditions and an early termination fee as set forth in the applicable supplemental indentures.

Notes payable to affiliates as of December 31, 2012 were as follows:

(in millions)	December 31, 2012
Notes payable to affiliates, due 2013 (1.772% - 7.099%)	$	1,273
Notes payable to affiliates, due 2014 (2.696% - 3.532%)	2,348
Notes payable to affiliates, due 2015 (2.843%)	1,905
Notes payable to affiliates, due 2016 (2.739%)	1,000
Notes payable to affiliates, thereafter (3.652% - 8.195%)	7,956
Unamortized discount and premium, net	463
Total notes payable to affiliates	14,945
Less: Current portion of long-term notes payable to affiliates	1,290
Long-term payables to affiliates	$	13,655

The notes payable to affiliates accrued interest from the date of issuance at stated interest rates or LIBOR plus an applicable margin, with accrued interest paid semi-annually, quarterly or monthly. The applicable interest rate on certain notes payable was subject to periodic change based on changes in the credit rating of Deutsche Telekom.

Long-term Debt

In connection with the business combination with MetroPCS, T-Mobile assumed long-term indebtedness of MetroPCS of $6.3 billion, including capital leases in the amount of $333 million. In addition, certain subsidiaries of T-Mobile became guarantors

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of the assumed senior unsecured notes previously issued by MetroPCS. Further, the Company issued $500 million of long-term debt in August 2013, for which certain subsidiaries are guarantors. See Note 12 – Guarantor Financial Information for the condensed consolidating financial information of T-Mobile’s guarantor subsidiaries.

Long-term debt as of September 30, 2013 was as follows:

(in millions)	September 30, 2013
5.250% Senior Notes due 2018	$	500
7.875% Senior Notes due 2018	1,000
6.625% Senior Notes due 2020	1,000
6.250% Senior Notes due 2021	1,750
6.625% Senior Notes due 2023	1,750
Unamortized premium from purchase price allocation fair value adjustment	422
Capital leases	356
Total debt	6,778
Less: Current portion of capital leases	17
Long-term debt	$	6,761

Interest on the long-term debt, excluding capital leases, is accrued from the date of issuance at stated interest rates and paid semi-annually. The long-term debt, excluding capital leases, may be redeemed, in whole, or from time to time in part, subject to the conditions and an early termination fee as set forth in the applicable supplemental indenture.

Registration Rights Agreements

In connection with the business combination with MetroPCS, T-Mobile and the guarantors assumed the obligations under a Registration Rights Agreement with Deutsche Bank Securities Inc., as representative of the initial purchasers of the 6.250% Senior Notes due 2021 and 6.625% Senior Notes due 2023. In addition, in August 2013, the Company entered into a Registration Rights Agreement with Deutsche Bank Securities Inc. in connection with the issuance of 5.250% Senior Notes due 2018 (together with the 6.250% Senior Notes due 2021 and 6.625% Senior Notes due 2023, the “2013 Notes”) by T-Mobile USA.

Under the terms of the Registration Rights Agreements, the Company and the subsidiary guarantors have agreed to use commercially reasonable efforts to file a registration statement covering an offer to exchange the 2013 Notes for Exchange Securities (as defined in the Registration Rights Agreements). The Company has also agreed to use commercially reasonable efforts to have such registration statement declared effective and to consummate the Exchange Offer not later than a specified period after the date such registration statement becomes effective. Alternatively, if the Company is unable to consummate the Exchange Offer under certain conditions, or if holders of the 2013 Notes cannot participate in, or cannot obtain freely transferable Exchange Securities in connection with the Exchange Offer for certain specified reasons, then the Company and the subsidiary guarantors will use commercially reasonable efforts to file a shelf registration statement within the times specified in the Registration Rights Agreements to facilitate resale of the 2013 Notes. All registration expenses (subject to limitations specified in the Registration Rights Agreements) will be paid by the Company.

Should the Company fail to consummate the Exchange Offer within the specified period; or, if a shelf registration statement is required, fail to have the shelf registration statement declared effective, or, if a shelf registration statement has become effective, fail to maintain the effectiveness thereof or the usability of the related prospectus (subject to certain exceptions) for more than a specified period within any twelve-month period, the Company will be required to pay certain additional interest as provided in the Registration Rights Agreements.

Capital Leases

Capital lease agreements are primarily for distributed antenna systems, with varying expiration terms through 2028. Assets and future obligations related to capital leases are included in property and equipment, short-term debt and long-term debt, respectively. Depreciation of assets held under capital leases is included in depreciation and amortization expense. As of December 31, 2012, capital lease obligations were not significant. Future minimum payments required under capital leases, including interest, over their remaining terms for the twelve months ended September 30 are $40 million in 2014, $41 million in 2015, $42 million in 2016, $43 million in 2017, $44 million in 2018, and $306 million thereafter, for a total of $516 million, including $160 million in interest.

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Short-term Debt

The Company maintains vendor financing arrangements with its primary network equipment suppliers. Under the respective agreements, the Company can obtain extended financing terms. The interest rate on the vendor financing arrangements is determined based on the difference between LIBOR and a specified margin per the agreements. Obligations under the vendor financing arrangements are included in short-term debt. As of September 30, 2013, the outstanding balance was $178 million. As of December 31, 2012, there was no outstanding balance.

Long-term Financial Obligation

In November 2012, T-Mobile conveyed to Crown Castle International Corp. (“CCI”) the exclusive right to manage and operate approximately 7,100 wireless communication tower sites in exchange for net proceeds of $2.5 billion (the “Tower Transaction”). The Company recorded a long-term financial obligation in the amount of the net proceeds received from CCI. T-Mobile recognizes interest expense on the financial obligation at a rate of approximately 8% using the effective interest method. The financial obligation is increased by accrued interest expense and amortized through contractual leaseback payments made by T-Mobile to CCI and through estimated future net cash flows generated and retained by CCI from operation of the tower sites. The long-term financial obligation was $2.5 billion as of September 30, 2013 and December 31, 2012, respectively. For further information, see Note 4 – Tower Transaction to the audited Consolidated Financial Statements for the three years ended December 31, 2012, included in the Current Report on Form 8-K filed on June 18, 2013.

Fair Value of Long-term Notes Payable to Affiliates and Debt

The fair value of the Company’s variable-rate notes payable to affiliates was determined based on a discounted cash flow approach which considers the future cash flows discounted at current rates. The approach includes an estimate for the stand-alone credit risk of T-Mobile. The Company’s variable-rate notes payable to affiliates are classified as Level 2 in the fair value hierarchy. In October 2013, Deutsche Telekom sold the fixed-rate notes payable to affiliates to third parties. The fair value of the Company’s fixed-rate notes payable to affiliates as of September 30, 2013 was determined based on the selling price as of October 8, 2013. This is a quoted market price in an active market, and therefore the fixed-rate notes payable to affiliates in an aggregate principal amount of $5.6 billion were transferred from Level 2 and are now classified as Level 1 in the fair value hierarchy. The fair value of the Company’s long-term debt was determined based on quoted market prices in active markets, and therefore are classified as Level 1 in the fair value hierarchy. The fair value hierarchy is described in Note 6 – Fair Value Measurements and Derivative Instruments.

The carrying amounts and fair values of the Company’s notes payable to affiliates and long-term debt were as follows:

	September 30, 2013				December 31, 2012
(in millions)	Carrying Amount		Fair Value		Carrying Amount		Fair Value
Variable-rate notes payable to affiliates	$	5,600	$	5,480	$	—	$	—
Fixed-rate notes payable to affiliates	5,600		5,601		14,945		14,721
Long-term debt principal, excluding capital leases	6,000		6,142		—		—

Although the Company has determined the estimated fair value amounts using available market information and commonly accepted valuation methodologies, considerable judgment is required in interpreting market data to develop fair value estimates for the variable-rate notes payable to affiliates and long-term debt. The fair value estimates are based on information available as of September 30, 2013 and December 31, 2012. As such, the Company’s estimates are not necessarily indicative of the amount that the Company could realize in a current market exchange.

Note 8 – Stock-Based Compensation

Stock Awards

During the second quarter of 2013, the Company’s Board of Directors and stockholders approved the 2013 Omnibus Incentive Plan, which authorized the issuance of up to 63 million shares of common stock. Under the incentive plan, the Company may grant stock options, stock appreciation rights, restricted stock, restricted stock units, and performance awards to employees, consultants, advisors and non-employee directors. As of September 30, 2013, there were 40 million shares of common stock available for future grants under the incentive plan.

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Stock-based compensation expense and related income tax benefits for the stock awards were as follows:

(in millions)	Three Months Ended September 30, 2013		Nine Months Ended September 30, 2013
Stock-based compensation expense	$	48	$	54
Income tax benefit related to stock-based compensation	18		21

In June 2013, the Company granted restricted stock units (“RSUs”) to eligible employees and certain non-employee directors. RSUs entitle the grantee to receive shares of T-Mobile common stock at the end of a vesting period of one to four years.

In June 2013, the Company also granted performance stock units (“PSUs”) to eligible key executives of the Company. PSUs entitle the holder to receive shares of T-Mobile common stock at the end of a vesting period of approximately 2.5 years if certain performance goals are achieved. The number of shares ultimately received is dependent on T-Mobile's business performance against the specified performance goals. The PSUs were considered granted for accounting purposes upon specification of the performance goals in July 2013.

The following activity occurred under the RSU and PSU awards:

	Units		Weighted Average Grant-Date Fair Value
Nonvested, December 31, 2012	—		$	—
Granted	24,584,884		22.03
Vested	(17,866	)	21.20
Forfeited	(962,345	)	21.20
Nonvested, September 30, 2013	23,604,673		$	22.06

Vesting of the stock awards triggers a tax obligation for the employee, which is required to be remitted to the relevant tax authorities. The Company has agreed to withhold stock units from the employee to cover the tax obligation.  The net shares issued to the employee are accounted for as outstanding common stock.

As of September 30, 2013, total unrecognized stock-based compensation expense related to nonvested stock awards, net of estimated forfeitures, was $379 million, before income taxes, which is expected to be recognized over a weighted-average period of 2.5 years.

Stock Options

Prior to the business combination, MetroPCS had established the MetroPCS Communications, Inc. 2010 Equity Incentive Compensation Plan, the MetroPCS Communications, Inc. Amended and Restated 2004 Equity Incentive Compensation Plan and the Second Amended and Restated 1995 Stock Option Plan (“Predecessor Plans”). The MetroPCS stock options were adjusted in connection with the business combination. See Note 2 – Transaction with MetroPCS for further information. Following stockholder approval of the Company’s 2013 Omnibus Incentive Plan, no new awards may be granted under the Predecessor Plans.

For the period from May 1, 2013 through September 30, 2013, 8,358,830 stock options with a weighted-average exercise price of $13.92 were exercised under the Predecessor Plans, generating proceeds of approximately $116 million, net of tax. At September 30, 2013, 8,200,306 stock options with a weighted-average exercise price of $25.59 and weighted-average contractual life of 4 years remain outstanding and exercisable under the Predecessor Plans.

Note 9 – Income Taxes

Income tax expense for the three months endedSeptember 30, 2013, compared to same period in 2012, increased primarily due to fluctuations in income and changes in Puerto Rico taxes.  Income tax expense for the nine months endedSeptember 30, 2013, compared to the same period in 2012, decreased primarily due to lower pretax income for the nine months endedSeptember 30, 2013, as compared to pretax income, exclusive of impairment charges, for the same period in 2012.

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Note 10 – Related Party Transactions

Prior to the closing of the business combination, Deutsche Telekom recapitalized T-Mobile by retiring T-Mobile’s notes payable to affiliates principal balance and all related derivative instruments in exchange for new unsecured senior notes and additional paid-in capital provided by Deutsche Telekom. In connection with the debt recapitalization, other outstanding balances with Deutsche Telekom were settled. See Note 2 – Transaction with MetroPCS for further information regarding the business combination and the effects on additional paid-in capital as a result of the debt recapitalization and the settlement of the other outstanding balances with Deutsche Telekom. Further, in October 2013, Deutsche Telekom sold a portion of the senior unsecured notes to third parties. See Note 14 – Subsequent Events for further information.

Additionally, T-Mobile has related party transactions associated with Deutsche Telekom or its affiliates in the ordinary course of business, which are included in various line items in the condensed consolidated financial statements.

The following table summarizes the significant balances with Deutsche Telekom or its affiliates in the condensed consolidated balance sheets:

(in millions)	September 30, 2013		December 31, 2012
Assets
Accounts receivable from affiliates	$	19	$	682
Interest rate swaps	—		106
Cross currency interest rate swaps	—		144
Liabilities
Current payables to affiliates	$	305	$	1,619
Long-term payables to affiliates	11,200		13,655

The following table summarizes the impact of significant transactions with Deutsche Telekom or its affiliates in the condensed consolidated statements of comprehensive income (loss):

	Three Months Ended September 30,				Nine Months Ended September 30,
(in millions)	2013		2012		2013			2012
Fees incurred for use of the T-Mobile brand	$	14	$	12	$	39		$	37
Expenses for telecommunications and IT services	27		23		77			94
Interest expense to affiliates	183		165		586			487
Net gain (loss) recorded in other comprehensive income (loss), net of tax	—		23		(39		)	19

Lines of Credit

T-Mobile has an unsecured revolving credit facility with Deutsche Telekom that allows for up to $500 million in borrowings. T-Mobile had no borrowings outstanding under this facility as of September 30, 2013. On March 29, 2013, T-Mobile amended and restated its credit agreement with U.S. Bank National Association that allows for the issuance of letters of credit in the aggregate amount of $100 million through June 30, 2014.  For the purposes of securing T-Mobile’s obligation under the credit agreement, Deutsche Telekom issued a letter of credit on T-Mobile’s behalf.

Note 11 – Commitments and Contingencies

Operating Leases

T-Mobile has operating leases with local exchange carriers for dedicated transportation lines with varying expiration terms through 2021.

T-Mobile has other operating leases for cell sites, switch sites, retail stores and office facilities with contractual terms expiring between 2013 and 2028. The majority of cell site leases have an initial term of five years to ten years, with renewal options for several additional five-year periods. The Company considers unexercised renewal options on leases as being reasonably assured of exercise, and thus included in future minimum lease payments for a total term of approximately 15 years from inception or acquisition of the lease.

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Future minimum payments for dedicated transportation lines and other operating leases over their remaining terms, including reasonably assured renewals, are summarized below:

(in millions)	Dedicated Transportation Lines		Other Operating Leases
Twelve Months Ending September 30,
2014	$	248	$	1,953
2015	161		1,921
2016	79		1,866
2017	44		1,784
2018	19		1,622
Thereafter	5		5,561
Total	$	556	$	14,707

In addition, as of September 30, 2013, the Company was contingently liable for approximately $677 million in future ground lease payments as the Company remains an obligor on the ground leases related to the Tower Transaction sites. This contingent rent is not included in the above table as any amounts due under ground leases are contractually owed by CCI based on T-Mobile's subleasing arrangement with CCI. For further information, see Note 4 – Tower Transaction to the audited Consolidated Financial Statements for the three years ended December 31, 2012, included in the Current Report on Form 8-K filed on June 18, 2013.

Aggregate rental expense for transportation lines under operating leases was $148 million and $129 million for the three months endedSeptember 30, 2013 and 2012, respectively, and $414 million and $420 million for the nine months endedSeptember 30, 2013 and 2012, respectively. Aggregate rental expense for cell sites, switch sites, retail stores and office facilities, including accounting for lease expense on a straight line basis, was $562 million and $482 million for the three months endedSeptember 30, 2013 and 2012, respectively, and $1.6 billion and $1.4 billion for the nine months endedSeptember 30, 2013 and 2012, respectively.

Other Commitments

T-Mobile has commitments with local exchange carriers for non-dedicated transportation lines with varying expiration terms through 2021. The original terms of these commitments vary from five years to ten years. Additionally, the Company has entered into various other commitments with a variety of suppliers primarily to purchase handsets, network services, equipment, software, marketing sponsorship agreements and other items in the ordinary course of business, with various terms, through 2018. These amounts are not reflective of the Company’s entire anticipated purchases under the related agreements, but are determined based on the non-cancelable quantities or termination amounts to which the Company was contractually obligated. Additionally, in the second quarter of 2013, T-Mobile entered into a purchase agreement with United States Cellular Corporation (“U.S. Cellular”) for the acquisition of Advanced Wireless Services spectrum (“AWS spectrum”) for $308 million in cash, which was included in Other Purchase Commitments below. The transaction was completed in October 2013. See Note 14 – Subsequent Events for further information.

Future minimum payments for non-dedicated transportation lines and other purchase commitments over their remaining terms are summarized below:

(in millions)	Non-Dedicated Transportation Lines		Other Purchase Commitments
Twelve months ending September 30,
2014	$	604	$	1,352
2015	583		260
2016	533		166
2017	443		2,335
2018	179		58
Thereafter	164		—
Total	$	2,506	$	4,171

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Contingencies and Litigation

T-Mobile is involved in putative stockholder derivative and class action lawsuits challenging the business combination with MetroPCS. These lawsuits include:

• Paul Benn v. MetroPCS Communications, Inc. et al., Case No. C.A. 7938-CS filed on October 11, 2012 in the Delaware Court of Chancery;

• Joseph Marino v. MetroPCS Communications, Inc. et al., Case No. C.A. 7940-CS filed on October 11, 2012 in the Delaware Court of Chancery;

• Robert Picheny v. MetroPCS Communications, Inc. et al., Case No. C.A. 7971-CS filed on October 22, 2012 in the Delaware Court of Chancery;

• James McLearie v. MetroPCS Communications, Inc. et al., Case No. C.A. 8009-CS filed on November 5, 2012 in the Delaware Court of Chancery;

• Adam Golovoy et al. v. Deutsche Telekom et al., Cause No. CC-12-06144-A filed on October 10, 2012 in the Dallas, Texas County Court at Law; and

• Nagendra Polu et al. v. Deutsche Telekom et al., Cause No. CC-12-06170-E filed on October 10, 2012 in the Dallas, Texas County Court at Law.

The lawsuits allege that the various defendants breached fiduciary duties, or aided and abetted in the alleged breach of fiduciary duties, to the MetroPCS stockholders by entering into the transaction. The complaints allege claims for relief including, among other things, rescission to the extent the terms of the business combination have already been implemented, damages for the breaches of fiduciary duty, and the payment of plaintiffs’ attorneys’ fees and costs. In addition, on March 28, 2013, another lawsuit challenging the transaction and related disclosures, and alleging breaches of fiduciary duty to MetroPCS shareholders was filed in the U.S. District Court for the Southern District of New York entitled The Merger Fund et al. v. MetroPCS Communications, Inc. et al. The New York case was settled, and the complaint was dismissed with prejudice on September 30, 2013; and in the Delaware cases, plaintiffs have agreed to dismiss their claims and the parties have reached a settlement in principle. T-Mobile intends to defend the remaining Texas lawsuits vigorously and does not expect resolution of these matters to have a material adverse effect on T-Mobile’s financial position, results of operations or cash flows.

T-Mobile and its subsidiaries are involved in numerous lawsuits, regulatory proceedings, and other similar matters, including class actions and intellectual property claims, that arise in the ordinary course of business. Legal proceedings are inherently unpredictable, and often present complex legal and factual issues and can include claims for large amounts of damages.  In T-Mobile’s opinion at this time, these proceedings, both individually and in the aggregate, should not have a material adverse effect on T-Mobile’s financial position, results of operations or cash flows. These statements are based on T-Mobile’s current understanding and assessment of relevant facts and circumstances. As such, T-Mobile’s view of these matters is subject to inherent uncertainties and may change in the future.

Note 12 – Guarantor Financial Information

On April 28, 2013, T-Mobile USA (“Issuer”) issued new notes payable to affiliates of $11.2 billion to Deutsche Telekom. As described in more detail in Note 2 – Transaction with MetroPCS, on April 30, 2013, the transactions contemplated by the BCA, were consummated, as a result of which MetroPCS Communications, Inc. (the legal acquirer) acquired all of the outstanding shares of the Issuer. Also on April 30, 2013, the name of MetroPCS Communications, Inc. was changed to T-Mobile US, Inc. In addition, unsecured senior notes of $5.9 billion, including the effects of purchase accounting, were assumed by the Issuer in connection with the closing of the business combination. In August 2013, the Issuer issued unsecured senior notes of $500 million.  Pursuant to the indenture and the applicable supplemental indentures, the notes payable to affiliates and long-term debt, excluding capital leases, are fully and unconditionally guaranteed, jointly and severally, on a senior unsecured basis by T-Mobile (“Parent”) and certain of the Issuer’s wholly owned subsidiaries (“Guarantor Subsidiaries”). The notes payable to affiliates and long-term debt are described in further detail in Note 7 – Notes Payable to Affiliates and Debt.

The guarantees of the Guarantor Subsidiaries are subject to release in limited circumstances only upon the occurrence of certain customary conditions. The indenture governing the notes payable to affiliates and long-term debt contain covenants that, among other things, limit the ability of the Issuer and the Guarantor Subsidiaries to: incur more debt; pay dividends and make distributions; make certain investments; repurchase stock; create liens or other encumbrances; enter into transactions with affiliates; enter into transactions that restrict dividends or distributions from subsidiaries; and merge, consolidate, or sell, or otherwise dispose of, substantially all of their assets. Certain provisions of each of the indentures and the supplemental indentures relating to the long-term debt restrict the ability of the Issuer to loan funds or make payments to Parent. However, the Issuer is allowed to make certain permitted payments to Parent under the terms of each of the indentures and the supplemental indentures.

22

In 2013, T-Mobile entered into an agreement with Cook Inlet Voice and Data Services, Inc. (“Cook Inlet”) to acquire all of Cook Inlet's interest in Cook Inlet/VoiceStream GSM VII PCS Holdings LLC, (“CIVS VII”), a fully consolidated Non-Guarantor Subsidiary. The transaction was completed in July 2013 and resulted in CIVS VII becoming an indirect wholly-owned subsidiary of T-Mobile USA. CIVS VII was subsequently combined with, and net assets transferred to, T-Mobile License LLC, a wholly-owned Restricted Subsidiary of T-Mobile USA. As a result the net assets of CIVS VII were included in the Guarantor Subsidiaries condensed consolidating balance sheet information. The guarantees of the notes payable to affiliates and long-term debt were unchanged by the transaction. See Note 13 – Additional Financial Information for more information regarding the transaction.

Presented below is the condensed consolidating financial information as of September 30, 2013 and December 31, 2012 and for the three and nine months endedSeptember 30, 2013 and 2012. As the business combination was treated as a “reverse acquisition” and the Issuer was treated as the accounting acquirer, the Issuer’s historical financial statements are the historical financial statements of Parent for comparative purposes. As a result the Parent column only reflects activity in the condensed consolidating financial statements presented below for periods subsequent to the consummation of the business combination on April 30, 2013. The equity method of accounting is used to account for ownership interests in subsidiaries, where applicable.

23

Condensed Consolidating Balance Sheet Information

As of September 30, 2013

(in millions)	Parent		Issuer		Guarantor Subsidiaries		Non-Guarantor Subsidiaries			Consolidating and Eliminating Adjustments			Consolidated
Assets
Current assets
Cash and cash equivalents	$	1,157	$	984	$	89	$	135		$	—		$	2,365
Accounts receivable, net of allowances for uncollectible accounts	—		—		3,256		114			—			3,370
Accounts receivable from affiliates	—		—		19		—			—			19
Inventory	—		—		761		—			—			761
Current portion of deferred tax assets, net	—		—		758		15			—			773
Other current assets	—		4		666		6			—			676
Total current assets	1,157		988		5,549		270			—			7,964
Property and equipment, net of accumulated depreciation	—		—		14,754		616			—			15,370
Goodwill	—		—		1,683		—			—			1,683
Spectrum licenses	—		—		18,414		—			—			18,414
Other intangible assets, net of accumulated amortization	—		—		1,297		—			—			1,297
Investments in unconsolidated affiliates	—		15		40		—			—			55
Investments in subsidiaries, net	9,328		25,455		—		—			(34,783		)	—
Intercompany receivables	1,927		1,073		—		19			(3,019		)	—
Long-term investments	3		—		33		—			—			36
Other assets	—		4		894		79			(29		)	948
Total assets	$	12,415	$	27,535	$	42,664	$	984		$	(37,831	)	$	45,767
Liabilities and Stockholders' Equity
Current liabilities
Accounts payable and accrued liabilities	$	—	$	189	$	4,007	$	128		$	—		$	4,324
Current payables to affiliates	—		201		104		—			—			305
Short-term debt	—		178		17		—			—			195
Deferred revenue	—		—		447		—			—			447
Other current liabilities	—		—		203		40			—			243
Total current liabilities	—		568		4,778		168			—			5,514
Long-term payables to affiliates	—		11,200		—		—			—			11,200
Long-term debt	—		6,424		337		—			—			6,761
Long-term financial obligation	—		—		364		2,124			—			2,488
Deferred tax liabilities	—		—		4,724		—			(29		)	4,695
Deferred rents	—		—		2,062		—			—			2,062
Negative carrying value of subsidiaries, net	—		—		767		—			(767		)	—
Intercompany payables	—		—		3,019		—			(3,019		)	—
Other long-term liabilities	—		15		617		—			—			632
Total long-term liabilities	—		17,639		11,890		2,124			(3,815		)	27,838
Total stockholders' equity	12,415		9,328		25,996		(1,308		)	(34,016		)	12,415
Total liabilities and stockholders' equity	$	12,415	$	27,535	$	42,664	$	984		$	(37,831	)	$	45,767

24

Condensed Consolidating Balance Sheet Information

As of December 31, 2012

(in millions)	Parent		Issuer		Guarantor Subsidiaries		Non-Guarantor Subsidiaries			Consolidating and Eliminating Adjustments			Consolidated
Assets
Current assets
Cash and cash equivalents	$	—	$	—	$	287	$	107		$	—		$	394
Accounts receivable, net of allowances for uncollectible accounts	—		—		2,607		71			—			2,678
Accounts receivable from affiliates	—		—		682		—			—			682
Inventory	—		—		457		—			—			457
Current portion of deferred tax assets, net	—		—		640		15			—			655
Other current assets	—		106		565		4			—			675
Total current assets	—		106		5,238		197			—			5,541
Property and equipment, net of accumulated depreciation	—		—		12,129		678			—			12,807
Spectrum licenses	—		—		14,330		220			—			14,550
Other intangible assets, net of accumulated amortization	—		—		79		—			—			79
Investments in unconsolidated affiliates	—		19		44		—			—			63
Investments in subsidiaries, net	—		24,823		—		—			(24,823		)	—
Intercompany receivables	—		—		3,760		71			(3,831		)	—
Long-term investments	—		—		31		—			—			31
Other assets	—		147		352		52			—			551
Total assets	$	—	$	25,095	$	35,963	$	1,218		$	(28,654	)	$	33,622
Liabilities and Stockholder’s Equity
Current liabilities
Accounts payable and accrued liabilities	$	—	$	—	$	3,382	$	93		$	—		$	3,475
Current payables to affiliates	—		1,494		125		—			—			1,619
Deferred revenue	—		—		290		—			—			290
Other current liabilities	—		—		168		40			—			208
Total current liabilities	—		1,494		3,965		133			—			5,592
Long-term payables to affiliates	—		13,655		—		—			—			13,655
Long-term financial obligation	—		—		360		2,101			—			2,461
Deferred tax liabilities	—		—		3,603		15			—			3,618
Deferred rents	—		—		1,884		—			—			1,884
Negative carrying value of subsidiaries, net	—		—		489		—			(489		)	—
Intercompany payables	—		3,831		—		—			(3,831		)	—
Other long-term liabilities	—		—		297		—			—			297
Total long-term liabilities	—		17,486		6,633		2,116			(4,320		)	21,915
Total stockholder’s equity	—		6,115		25,365		(1,031		)	(24,334		)	6,115
Total liabilities and stockholder’s equity	$	—	$	25,095	$	35,963	$	1,218		$	(28,654	)	$	33,622

25

Condensed Consolidating Statement of Comprehensive Income (Loss) Information

Three Months EndedSeptember 30, 2013

(in millions)	Parent			Issuer			Guarantor Subsidiaries			Non-Guarantor Subsidiaries			Consolidating and Eliminating Adjustments			Consolidated
Revenues
Service revenues	$	—		$	—		$	4,958		$	219		$	(39	)	$	5,138
Equipment sales	—			—			1,643			—			(176		)	1,467
Other revenues	—			—			59			30			(6		)	83
Total revenues	—			—			6,660			249			(221		)	6,688
Operating expenses
Network costs	—			—			1,443			6			(5		)	1,444
Cost of equipment sales	—			—			2,052			155			(192		)	2,015
Customer acquisition	—			—			1,039			—			—			1,039
General and administrative	—			—			871			47			(24		)	894
Depreciation and amortization	—			—			966			21			—			987
MetroPCS transaction and integration costs	—			—			12			—			—			12
Total operating expenses	—			—			6,383			229			(221		)	6,391
Operating income	—			—			277			20			—			297
Other income (expense)
Interest expense to affiliates	—			(183		)	—			—			—			(183		)
Interest expense	—			(84		)	(24		)	(43		)	—			(151		)
Interest income	—			—			50			—			—			50
Other income (expense), net	—			(9		)	2			—			—			(7		)
Total other income (expense), net	—			(276		)	28			(43		)	—			(291		)
Income (loss) before income taxes	—			(276		)	305			(23		)	—			6
Income tax expense (benefit)	—			—			49			(7		)	—			42
Earnings (loss) of subsidiaries	(36		)	240			(13		)	—			(191		)	—
Net income (loss)	(36		)	(36		)	243			(16		)	(191		)	(36		)
Other comprehensive income (loss), net of tax	—			—			—			—			—			—
Total comprehensive income (loss)	$	(36	)	$	(36	)	$	243		$	(16	)	$	(191	)	$	(36	)

26

Condensed Consolidating Statement of Comprehensive Income (Loss) Information

Three Months EndedSeptember 30, 2012

(in millions)	Parent		Issuer			Guarantor Subsidiaries			Non-Guarantor Subsidiaries		Consolidating and Eliminating Adjustments			Consolidated
Revenues
Service revenues	$	—	$	—		$	4,111		$	178	$	(28	)	$	4,261
Equipment sales	—		—			698			—		(144		)	554
Other revenues	—		—			95			17		(34		)	78
Total revenues	—		—			4,904			195		(206		)	4,893
Operating expenses
Network costs	—		—			1,158			17		(34		)	1,141
Cost of equipment sales	—		—			904			123		(161		)	866
Customer acquisition	—		—			823			—		—			823
General and administrative	—		—			817			34		(11		)	840
Depreciation and amortization	—		—			825			—		—			825
Impairment charges	—		—			8,134			—		—			8,134
Restructuring costs	—		—			36			—		—			36
Other, net	—		—			(179		)	—		—			(179		)
Total operating expenses	—		—			12,518			174		(206		)	12,486
Operating income (loss)	—		—			(7,614		)	21		—			(7,593		)
Other income (expense)
Interest expense to affiliates	—		(155		)	(10		)	—		—			(165		)
Interest income	—		—			20			—		—			20
Other income, net	—		9			6			—		—			15
Total other income (expense), net	—		(146		)	16			—		—			(130		)
Income (loss) before income taxes	—		(146		)	(7,598		)	21		—			(7,723		)
Income tax expense	—		—			6			6		—			12
Loss of subsidiaries	—		(7,589		)	—			—		7,589			—
Net income (loss)	—		(7,735		)	(7,604		)	15		7,589			(7,735		)
Other comprehensive income (loss), net of tax	—		24			(14		)	—		14			24
Total comprehensive income (loss)	$	—	$	(7,711	)	$	(7,618	)	$	15	$	7,603		$	(7,711	)

27

Condensed Consolidating Statement of Comprehensive Income (Loss) Information

Nine Months EndedSeptember 30, 2013

(in millions)	Parent			Issuer			Guarantor Subsidiaries			Non-Guarantor Subsidiaries			Consolidating and Eliminating Adjustments			Consolidated
Revenues
Service revenues	$	—		$	—		$	13,404		$	586		$	(91	)	$	13,899
Equipment sales	—			—			3,952			—			(500		)	3,452
Other revenues	—			—			200			116			(74		)	242
Total revenues	—			—			17,556			702			(665		)	17,593
Operating expenses
Network costs	—			—			3,907			46			(73		)	3,880
Cost of equipment sales	—			—			4,978			406			(547		)	4,837
Customer acquisition	—			—			2,804			—			—			2,804
General and administrative	—			—			2,409			118			(45		)	2,482
Depreciation and amortization	—			—			2,568			62			—			2,630
MetroPCS transaction and integration costs	—			—			51			—			—			51
Restructuring costs	—			—			54			—			—			54
Other, net	—			—			(2		)	—			—			(2		)
Total operating expenses	—			—			16,769			632			(665		)	16,736
Operating income	—			—			787			70			—			857
Other income (expense)
Interest expense to affiliates	—			(586		)	—			—			—			(586		)
Interest expense	—			(138		)	(44		)	(129		)	—			(311		)
Interest income	—			—			125			—			—			125
Other income, net	—			105			—			—			—			105
Total other income (expense), net	—			(619		)	81			(129		)	—			(667		)
Income (loss) before income taxes	—			(619		)	868			(59		)	—			190
Income tax expense (benefit)	—			—			158			(23		)	—			135
Earnings (loss) of subsidiaries	(83		)	674			(42		)	—			(549		)	—
Net income (loss)	(83		)	55			668			(36		)	(549		)	55
Other comprehensive income (loss), net of tax	—			(39		)	24			—			(24		)	(39		)
Total comprehensive income (loss)	$	(83	)	$	16		$	692		$	(36	)	$	(573	)	$	16

28

Condensed Consolidating Statement of Comprehensive Income (Loss) Information

Nine Months EndedSeptember 30, 2012

(in millions)	Parent		Issuer			Guarantor Subsidiaries			Non-Guarantor Subsidiaries		Consolidating and Eliminating Adjustments			Consolidated
Revenues
Service revenues	$	—	$	—		$	12,631		$	535	$	(80	)	$	13,086
Equipment sales	—		—			1,933			—		(409		)	1,524
Other revenues	—		—			253			52		(105		)	200
Total revenues	—		—			14,817			587		(594		)	14,810
Operating expenses
Network costs	—		—			3,568			52		(105		)	3,515
Cost of equipment sales	—		—			2,570			342		(456		)	2,456
Customer acquisition	—		—			2,323			—		—			2,323
General and administrative	—		—			2,600			114		(33		)	2,681
Depreciation and amortization	—		—			2,391			—		—			2,391
Impairment charges	—		—			8,134			—		—			8,134
Restructuring costs	—		—			90			—		—			90
Other, net	—		—			(136		)	—		—			(136		)
Total operating expenses	—		—			21,540			508		(594		)	21,454
Operating income (loss)	—		—			(6,723		)	79		—			(6,644		)
Other income (expense)
Interest expense to affiliates	—		(475		)	(12		)	—		—			(487		)
Interest income	—		—			53			—		—			53
Other income, net	—		16			6			—		—			22
Total other income (expense), net	—		(459		)	47			—		—			(412		)
Income (loss) before income taxes	—		(459		)	(6,676		)	79		—			(7,056		)
Income tax expense	—		—			244			28		—			272
Loss of subsidiaries	—		(6,869		)	—			—		6,869			—
Net income (loss)	—		(7,328		)	(6,920		)	51		6,869			(7,328		)
Other comprehensive income (loss), net of tax	—		19			(12		)	—		12			19
Total comprehensive income (loss)	$	—	$	(7,309	)	$	(6,932	)	$	51	$	6,881		$	(7,309	)

29

Condensed Consolidating Statement of Cash Flows Information

Nine Months EndedSeptember 30, 2013

(in millions)	Parent		Issuer			Guarantor Subsidiaries			Non-Guarantor Subsidiaries		Consolidating and Eliminating Adjustments		Consolidated
Operating activities
Net cash provided by (used in) operating activities	$	304	$	(921	)	$	3,130		$	28	$	—	$	2,541
Investing activities
Purchases of property and equipment	—		—			(3,143		)	—		—		(3,143		)
Purchases of intangible assets	—		—			(52		)	—		—		(52		)
Short term affiliate loan receivable, net	—		—			300			—		—		300
Cash and cash equivalents acquired in MetroPCS business combination	737		1,407			—			—		—		2,144
Change in restricted cash equivalents	—		—			(100		)	—		—		(100		)
Investments in unconsolidated affiliates, net	—		—			(22		)	—		—		(22		)
Other, net	—		—			5			—		—		5
Net cash provided by (used in) investing activities	737		1,407			(3,012		)	—		—		(868		)
Financing activities
Proceeds from issuance of long-term debt	—		498			—			—		—		498
Repayments of short-term debt for purchases of property and equipment	—		—			(194		)	—		—		(194		)
Repayments related to a variable interest entity	—		—			(80		)	—		—		(80		)
Distribution to affiliate as a result of debt recapitalization	—		—			(41		)	—		—		(41		)
Proceeds from exercise of stock options	116		—			—			—		—		116
Excess tax benefit from stock-based compensation	—		—			4			—		—		4
Other, net	—		—			(5		)	—		—		(5		)
Net cash provided by (used in) financing activities	116		498			(316		)	—		—		298
Change in cash and cash equivalents	1,157		984			(198		)	28		—		1,971
Cash and cash equivalents
Beginning of period	—		—			287			107		—		394
End of period	$	1,157	$	984		$	89		$	135	$	—	$	2,365

30

Condensed Consolidating Statement of Cash Flows Information

Nine Months EndedSeptember 30, 2012

(in millions)	Parent		Issuer		Guarantor Subsidiaries			Non-Guarantor Subsidiaries		Consolidating and Eliminating Adjustments		Consolidated
Operating activities
Net cash provided by operating activities	$	—	$	—	$	2,688		$	19	$	—	$	2,707
Investing activities
Purchases of property and equipment	—		—		(2,003		)	—		—		(2,003		)
Purchases of intangible assets	—		—		(379		)	—		—		(379		)
Short term affiliate loan receivable, net	—		—		(297		)	—		—		(297		)
Investments in unconsolidated affiliates, net	—		—		16			—		—		16
Other, net	—		—		(4		)	—		—		(4		)
Net cash used in investing activities	—		—		(2,667		)	—		—		(2,667		)
Financing activities
Net cash provided by financing activities	—		—		—			—		—		—
Change in cash and cash equivalents	—		—		21			19		—		40
Cash and cash equivalents
Beginning of period	—		—		339			51		—		390
End of period	$	—	$	—	$	360		$	70	$	—	$	430

Note 13 – Additional Financial Information

Supplemental Balance Sheet Information

Variable Interest Entities

CIVS VII was a joint venture funded by contributions from T-Mobile and Cook Inlet. CIVS VII was managed by Cook Inlet and owned spectrum licenses. T-Mobile utilized these spectrum licenses under certain operating agreements and compensated CIVS VII based on minutes of use. As T-Mobile was deemed to be the primary beneficiary, the results of CIVS VII were consolidated in the Company’s financial statements, which included $236 million in assets held by the joint venture as of December 31, 2012.

In conjunction with the joint venture agreement for CIVS VII, T-Mobile entered into an Exchange Rights Agreement with Cook Inlet. The existing agreement allowed Cook Inlet, with advance notice, to exchange its ownership interest in the joint venture for cash equal to the sum of Cook Inlet’s original contribution to the joint venture plus accrued interest. The exchange right did not meet the definition of a derivative instrument. The terms of the Exchange Rights Agreement were accounted for as a financing of T-Mobile’s purchase of Cook Inlet’s interest in the joint venture.

On February 28, 2013, Cook Inlet and T-Mobile entered into an Amended and Restated Exchange Rights Agreement in which T-Mobile agreed to pay Cook Inlet approximately $94 million in exchange for all of Cook Inlet’s interest in CIVS VII. On April 1, 2013, T-Mobile paid Cook Inlet $40 million as a down payment for its equity interest, and the parties filed for FCC regulatory approval of the contemplated equity transfer. On July 15, 2013, T-Mobile paid Cook Inlet $54 million for the remaining payment, which included $14 million for interest, in connection with the Amended Exchange Rights Agreement. T-Mobile purchased the remaining interest in CIVS VII from Cook Inlet, which resulted in CIVS VII becoming an indirect wholly-owned subsidiary of T-Mobile USA. CIVS VII was subsequently combined with, and net assets transferred to, T-Mobile License LLC, a wholly owned restricted subsidiary of T-Mobile USA. As a result the net assets of CIVS VII were subsequently included in the Guarantor Subsidiaries condensed consolidating balance sheet information. See Note 12 – Guarantor Financial Information for further information.

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Accumulated Other Comprehensive Income

Prior to the closing of the business combination with MetroPCS, Deutsche Telekom recapitalized T-Mobile by retiring T-Mobile’s notes payable to affiliates principal balance and all related derivative instruments, which included the interest rate swaps and cross currency interest rate swaps.

The following table summarizes the changes in accumulated other comprehensive income (“AOCI”), net of tax, by component:

(in millions)	Cross Currency Interest Rate Swaps			Foreign Currency Translation			Available-for-Sale Securities		Total
Balance, December 31, 2012	$	(23	)	$	62		$	2	$	41
Unrealized gains (losses) arising during the period	(10		)	42			—		32
Reclassification adjustments recognized in net income	33			(104		)	—		(71		)
Net gain (loss) in other comprehensive income (loss)	23			(62		)	—		(39		)
Balance, September 30, 2013	$	—		$	—		$	2	$	2

The following table presents the effects on net income of amounts reclassified from AOCI (in millions):

		Amount Reclassified from AOCI to Income
AOCI Component	Location	Three Months Ended September 30, 2013		Nine Months Ended September 30, 2013
Cross Currency Interest Rate Swaps	Interest expense to affiliates	$	—	$	53
	Income tax effect	—		(20		)
	Net of tax	$	—	$	33
Foreign Currency Translation	Other income, net	$	—	$	(166	)
	Income tax effect	—		62
	Net of tax	$	—	$	(104	)
Total reclassifications, net of tax		$	—	$	(71	)

Supplemental Statements of Comprehensive Income (Loss) Information

Earnings (Loss) Per Share

The computation of basic and diluted earnings (loss) per share was as follows:

	Three Months Ended September 30,						Nine Months Ended September 30,
(in millions, except shares and per share amounts)	2013			2012			2013		2012
Basic and Diluted Earnings (Loss) Per Share:
Net income (loss)	$	(36	)	$	(7,735	)	$	55	$	(7,328	)
Weighted average shares outstanding - basic	726,877,458			535,286,077			642,957,645		535,286,077
Dilutive effect of outstanding stock options and awards	—			—			2,562,879		—
Weighted average shares outstanding - diluted	726,877,458			535,286,077			645,520,524		535,286,077
Earnings (loss) per share - basic	$	(0.05	)	$	(14.45	)	$	0.09	$	(13.69	)
Earnings (loss) per share - diluted	(0.05		)	(14.45		)	0.09		(13.69		)

Potentially dilutive securities were not included in the computation of diluted earnings (loss) per share for certain periods if to do so would have been antidilutive.  As the Company incurred a net loss for the three months endedSeptember 30, 2013, all outstanding stock options of 8,200,306 and unvested stock awards of 24,928,415 as of September 30, 2013 were excluded.  For the nine months endedSeptember 30, 2013, potentially dilutive outstanding stock options of 4,484,084 and unvested stock awards of 2,765,055 as of September 30, 2013 were excluded.  Unvested PSUs were based on the number of shares ultimately expected to vest based on T-Mobile’s business performance against the specified performance goals.

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Restructuring Costs

In 2013, T-Mobile initiated a cost restructuring program in order to reduce its overall cost structure to align with its Un-carrier strategy and position T-Mobile for growth. Restructuring costs were $54 million for the nine months endedSeptember 30, 2013.

In 2012, T-Mobile consolidated its call center operations and restructured operations in other parts of the business to strengthen T-Mobile’s competiveness. Major costs incurred primarily related to lease buyout costs, severance payments and other personnel-related restructuring costs. Lease buyout costs included in accrued liabilities related to the 2012 restructuring program are being relieved over the remaining lease terms through 2022. Restructuring costs were $36 million and $90 million for the three and nine months endedSeptember 30, 2012, respectively.

Activities associated with T-Mobile’s restructuring plans and respective accrued liabilities were as follows:

(in millions)	2013 Restructuring Program			2012 Restructuring Program			Total Restructuring
Balance, December 31, 2012	$	—		$	32		$	32
Restructuring costs	54			—			54
Cash payments	(53		)	(9		)	(62		)
Balance, September 30, 2013	$	1		$	23		$	24

Supplemental Statements of Cash Flows Information

The following table summarizes T-Mobile’s supplemental cash flows information:

	Nine Months Ended September 30,
(in millions)	2013		2012
Interest and income tax payments:
Interest payments	$	784	$	644
Income tax payments (refunds), net	21		24
Noncash investing and financing activities:
Increase in accounts payable for purchases of property and equipment	53		233
Short-term debt outstanding for financing of property and equipment purchases	178		—
Relinquishment of accounts receivable from affiliates in satisfaction of notes payable to affiliates	—		644
Noncash portion of spectrum license swap transactions	8		1,452
Retirement of notes payable to affiliates	14,450		—
Elimination of net unamortized discounts and premiums on notes payable to affiliates	434		—
Issuance of new notes payable to affiliates	11,200		—
Settlement of accounts receivable from affiliates and other outstanding balances	363		—
Income tax benefit from debt recapitalization	178		—
Net assets acquired in MetroPCS business combination, excluding cash acquired	827		—

Note 14 – Subsequent Events

Notes Payable to Affiliates

In October 2013, Deutsche Telekom sold an aggregate principal amount of $5.6 billion of the senior unsecured notes to third parties. This included $1.25 billion of 6.464% Senior Notes due 2019, $1.25 billion of 6.542% Senior Notes due 2020, $1.25 billion of 6.633% Senior Notes due 2021, $1.25 billion of 6.731% Senior Notes due 2022, and $600 million of 6.836% Senior Notes due 2023. The terms and guarantees of these notes were unchanged and T-Mobile did not receive any proceeds from the sale of these notes. Beginning October 2013, these notes will be reclassified from notes payable to affiliates to long-term debt.

Spectrum Acquisition

In October 2013, T-Mobile paid U.S. Cellular $308 million in connection with the purchase agreement described in Note 11 – Commitments and Contingencies, at which time T-Mobile acquired the AWS spectrum from U.S. Cellular.

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Item 2. Management’s Discussion and Analysis of Financial Condition and Results of Operations

Certain statements in this report include forward-looking statements within the meaning of the Private Securities Litigation Reform Act of 1995. All statements, other than statements of historical fact, including information concerning our possible or assumed future results of operations, are forward-looking statements. These forward-looking statements are generally identified by the words “anticipates,” “believes,” “estimates,” “expects,” or similar expressions.

Forward-looking statements are based on current expectations and assumptions, which are subject to risks and uncertainties and may cause actual results to differ materially from the forward-looking statements. The following important factors, along with the “Risk Factors” included in Part II, Item 1A of our Quarterly Report on Form 10-Q for the quarter ended June 30, 2013 filed on August 8, 2013, could affect future results and cause those results to differ materially from those expressed in the forward-looking statements:

• adverse conditions in the U.S. and international economies or disruptions to the credit and financial markets;

• competition in the wireless services market;

• the ability to complete and realize expected synergies and other benefits of acquisitions;

• the inability to implement our business strategies or ability to fund our wireless operations, including payment for additional spectrum, network upgrades, and technological advancements;

• the ability to renew our spectrum licenses on attractive terms or acquire new spectrum licenses;

• the ability to manage growth in wireless data services including network quality and acquisition of adequate spectrum licenses at reasonable costs and terms;

• material changes in available technology;

• the timing, scope and financial impact of our deployment of 4G Long-Term Evolution (“LTE”) technology;

• the impact on our networks and business from major technology equipment failures;

• breaches of network or information technology security, natural disasters or terrorist attacks or existing or future litigation and any resulting financial impact not covered by insurance;

• any changes in the regulatory environments in which we operate, including any increase in restrictions on the ability to operate our networks;

• any disruption of our key suppliers’ provisioning of products or services;

• material adverse changes in labor matters, including labor negotiations or additional organizing activity, and any resulting financial and/or operational impact;

• changes in accounting assumptions that regulatory agencies, including the SEC, may require or that result from changes in the accounting rules or their application, which could result in an impact on earnings; and,

• changes in tax laws, regulations and existing standards and the resolution of disputes with any taxing jurisdictions.     

Except as expressly stated, the financial condition and results of operations discussed throughout Management’s Discussion and Analysis of Financial Condition and Results of Operations are those of T-Mobile US, Inc. and its consolidated subsidiaries (“T-Mobile”).     

Overview

Management’s Discussion and Analysis of Financial Condition and Results of Operations (“MD&A”) is intended to provide a reader of our financial statements with a narrative explanation from the perspective of management of our financial condition, results of operations, liquidity and certain other factors that may affect future results. The MD&A is provided as a supplement to, and should be read in conjunction with, our audited Consolidated Financial Statements for the three years ended December 31, 2012, included in the Current Report on Form 8-K filed on June 18, 2013 and our unaudited Condensed Consolidated Financial Statements included in Part I, Item 1 of this Form 10-Q. Unless expressly stated otherwise, the comparisons presented in this MD&A refer to the same period in the prior year. T-Mobile’s MD&A is presented in the following sections:

• Results of Operations

• Performance Measures

• Reconciliation of Financial Measures

• Liquidity and Capital Resources

• Off-Balance Sheet Arrangements

• Related Party Transactions

• Restructuring Costs

• Critical Accounting Policies and Estimates

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T-Mobile is a national provider of mobile communications services capable of reaching over 280 million Americans. Our objective is to be the simpler choice for a better mobile experience. Our intent is to bring this proposition to life across all our brands, including T-Mobile, MetroPCS, and GoSmart, and across our major customer base of retail, wholesale and business (B2B) consumers.

We generate revenue by offering affordable postpaid and prepaid wireless voice, messaging and data services, as well as mobile broadband and wholesale wireless services. We provided service to approximately 45 million customers through our nationwide network as of September 30, 2013. We also generate revenues by offering a wide selection of wireless handsets and accessories, including smartphones, wireless-enabled computers such as notebooks and tablets, and data cards which are manufactured by various suppliers. Our most significant expenses are related to acquiring and retaining customers, maintaining and expanding our network, and compensating employees.

Business Combination with MetroPCS

On April 30, 2013, the business combination of T-Mobile USA and MetroPCS was completed. Under the terms of the business combination agreement, Deutsche Telekom received approximately 74% of the fully-diluted shares of common stock of the combined company in exchange for its transfer of all of T-Mobile USA’s common stock. This transaction was consummated to provide us with expanded scale, spectrum, and financial resources to compete aggressively with other larger U.S. wireless carriers. The acquired assets and liabilities of MetroPCS are included in the Company’s condensed consolidated balance sheet as of September 30, 2013 and MetroPCS’s results of operations and cash flows for the period from May 1, 2013 through September 30, 2013 are included in the Company’s condensed consolidated statement of income and comprehensive income and cash flows. Customers and revenues of MetroPCS are included in the branded prepaid category. See Note 2 – Transaction with MetroPCS of the Notes to the Condensed Consolidated Financial Statements included in Part I, Item 1 of this Form 10-Q for further information regarding the business combination.

Customers

T-Mobile generates revenue from three primary categories of customers: branded postpaid, branded prepaid and wholesale. Branded postpaid customers generally include customers that are qualified to pay after incurring service and branded prepaid customers generally include customers who pay in advance. Our branded prepaid customers include customers of the T-Mobile, MetroPCS and GoSmart brands. Wholesale customers include Machine-to-Machine (“M2M”) customers and Mobile Virtual Network Operator (“MVNO”) customers that operate on the T-Mobile network, but are managed by wholesale partners. We generate the majority of our service revenues by providing wireless communication services to branded postpaid customers. Therefore, our ability to acquire and retain branded postpaid customers is significant to our business, including the generation of service revenues, equipment sales and other revenues.

We offer services, handsets and accessories directly to consumers through our owned and operated retail stores, as well as through our websites (www.T-Mobile.com and www.MetroPCS.com). In addition, we sell handsets to dealers and other third party distributors for resale through independent third party retail outlets and a variety of third party websites. The information on our website is not part of this report or any other report furnished to or filed with the SEC.

During the three months endedSeptember 30, 2013, 64% of our service revenues were generated by providing wireless communication services to branded postpaid customers, compared to 31% from branded prepaid customers, and 5% from wholesale customers, roaming and other services. During the nine months endedSeptember 30, 2013, 71% of our service revenues were generated by providing wireless communication services to branded postpaid customers, compared to 24% from branded prepaid customers, and 5% from wholesale customers, roaming and other services.

Services and Products

T-Mobile provides wireless communication services nationwide through a variety of service plan options. These include our Value and Simple Choice plans, which allow customers to subscribe for wireless services separately from, or without purchase of, or upfront payment for, a handset.

We introduced our Simple Choice plans as part of our Un-carrier value proposition in the first quarter of 2013. Simple Choice plans eliminate annual service contracts and simplify the lineup of consumer rate plans to one affordable plan for unlimited talk, text and web service with the option to add high speed data services. Depending on their credit profiles, customers are qualified either for postpaid service, where they generally pay after incurring service, or prepaid service, where they generally pay in advance.

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Customers on our Simple Choice or similar plans benefit from reduced monthly service charges and can choose whether to use their own compatible handset on our network or purchase a handset from us or one of our dealers. Depending on their credit profile, qualifying customers who purchase their handset from us have the option of financing a portion of the purchase price at the point-of-sale over an installment period. Our Value and Simple Choice plans result in increased equipment revenue for each handset sold compared to traditional bundled price plans that typically offer a handset discount but involve higher monthly service charges. Our Value and Simple Choice plans also result in increased net income during the period of sale while monthly service revenues are lower over the service period.

In July 2013, we launched phase 2 of our Un-carrier value proposition, Just Upgrade My Phone (“JUMP!^TM”), under which qualifying customers who finance their initial handset purchase using the Company’s Equipment Installment Plan (“EIP”) and enroll in the JUMP! program can upgrade their handset up to twice a year, following completion of an initial six-month enrollment period, and receive a credit for their outstanding EIP balance provided they trade in their used handset to purchase a new handset from the Company.

Business Strategy

We continue to aggressively pursue our strategy to reposition T-Mobile and return the company to growth. Our strategy focuses on the following elements:

• Un-carrier Value Proposition - We plan to extend our position as the leader in delivering distinctive value for consumers in all customer segments. We believe the launches of Un-carrier phases 1 and 2 have been successful, as evidenced by our strong customer growth momentum. Simple Choice plans, launched in March 2013 as phase 1 of our Un-carrier value proposition, eliminate annual service contracts and provide customers with affordable rate plans without the complexity of caps and overage charges. Customers on Simple Choice plans can purchase the most popular smartphones and if qualified, pay for them in affordable interest-free monthly installments. Modernization of the network and introduction of the Apple^® iPhone^® in the second quarter of 2013 further repositioned T-Mobile as a provider of dependable high-speed service with a full range of desirable handsets and devices. In July 2013, we announced JUMP!, which enables participating subscribers to upgrade their eligible handset twice a year upon completion of an initial six-month enrollment period. In October 2013, we unveiled phase 3 of our Un-carrier value proposition, which provides our customers reduced United States to International calling rates and roaming fees, and free data roaming while traveling abroad in over 100 countries. In addition, in November 2013, we began to offer the Apple iPad^® Air and iPadmini.

• Network Modernization – We are currently in the process of rapidly upgrading our network to modernize the 4G network, improve coverage, align spectrum bands with other key players in the U.S. market and deploy nationwide 4G LTE services in 2013. The timing of the launch of 4G LTE allows us to take advantage of the latest and most advanced 4G LTE technology infrastructure, improving the overall capacity and performance of our 4G network, while optimizing spectrum resources. In October 2013, we announced that we have exceeded our 2013 targets for 4G LTE network coverage, by delivering 4G LTE to more than 200 million people in 254 metro areas and a goal to deploy 10+10 MHz 4G LTE in 24 of the Top 25 metro areas by year end (and 40 of the Top 50 metro areas). Additionally, the migration of MetroPCS brand legacy CDMA customers onto T-Mobile’s 4G HSPA+ and LTE network is ahead of schedule, providing faster network performance for MetroPCS customers with compatible handsets. We expect the migration to be complete by the end of 2015.

• Multi-segment Focus – We plan to continue to operate in multiple customer market segments to accelerate growth. The addition of the flagship MetroPCS brand to the T-Mobile portfolio increased our ability to serve the full breadth of the wireless market. We expect to continue to accelerate the growth of the MetroPCS brand by expanding into new geographic regions, through the end of 2013 and continuing through 2014. Recently, we introduced the Simple Choice value proposition to our prepaid and B2B customers as well, so that prepaid customers and businesses can leverage the benefits of the Simple Choice plans. Additionally, we expect to continue to expand our wholesale business through MVNOs and other wholesale relationships where our spectrum depth, available network capacity and GSM technology base help secure profitable wholesale customers.

• Aligned Cost Structure – We continue to pursue a low-cost business operating model to drive cost savings, which can be reinvested in the business. These cost programs are on-going as we continue to work to simplify our business and drive operational efficiencies and cost savings in areas such as network optimization, customer roaming, customer service, improved customer collection rates and better management of customer acquisition and retention costs. A portion of savings have been, and will continue to be, reinvested into customer acquisition programs.

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Results of Operations

Set forth below is a summary of consolidated results:

	Three Months Ended September 30,								Nine Months Ended September 30,
(in millions)	2013			2012			Change		2013			2012			Change
Revenues
Branded postpaid revenues	$	3,302		$	3,571		(8	)%	$	9,849		$	11,105		(11	)%
Branded prepaid revenues	1,594			450			NM		3,339			1,241			NM
Wholesale revenues	157			134			17	%	449			407			10	%
Roaming and other service revenues	85			106			(20	)%	262			333			(21	)%
Total service revenues	5,138			4,261			21	%	13,899			13,086			6	%
Equipment sales	1,467			554			NM		3,452			1,524			NM
Other revenues	83			78			6	%	242			200			21	%
Total revenues	6,688			4,893			37	%	17,593			14,810			19	%
Operating expenses
Network costs	1,444			1,141			27	%	3,880			3,515			10	%
Cost of equipment sales	2,015			866			NM		4,837			2,456			97	%
Customer acquisition	1,039			823			26	%	2,804			2,323			21	%
General and administrative	894			840			6	%	2,482			2,681			(7	)%
Depreciation and amortization	987			825			20	%	2,630			2,391			10	%
MetroPCS transaction and integration costs	12			—			NM		51			—			NM
Impairment charges	—			8,134			NM		—			8,134			NM
Restructuring costs	—			36			NM		54			90			(40	)%
Other, net	—			(179		)	NM		(2		)	(136		)	NM
Total operating expenses	6,391			12,486			(49	)%	16,736			21,454			(22	)%
Operating income (loss)	297			(7,593		)	NM		857			(6,644		)	NM
Other income (expense)
Interest expense to affiliates	(183		)	(165		)	11	%	(586		)	(487		)	20	%
Interest expense	(151		)	—			NM		(311		)	—			NM
Interest income	50			20			NM		125			53			NM
Other income (expense), net	(7		)	15			NM		105			22			NM
Total other expense, net	(291		)	(130		)	NM		(667		)	(412		)	62	%
Income (loss) before income taxes	6			(7,723		)	NM		190			(7,056		)	NM
Income tax expense	42			12			NM		135			272			(50	)%
Net income (loss)	$	(36	)	$	(7,735	)	NM		$	55		$	(7,328	)	NM

NM – Not Meaningful

Revenues

Branded postpaid revenuesdecreased$269 million, or 8%, for the three months ended and $1.3 billion, or 11%, for the nine months endedSeptember 30, 2013, compared to the same periods in 2012. The decreases were primarily attributable to lower average revenue per user (“ARPU”). Branded postpaid ARPU was negatively impacted by the growth of our Value and Simple Choice plans which have lower priced rate plans than other branded postpaid rate plans. Compared to other traditional bundled postpaid price plans, Value and Simple Choice plans result in lower service revenues but higher equipment revenues at the time of the sale as the plans do not include a bundled sale of a discounted handset. Branded postpaid customers on Value and Simple Choice plans more than doubled over the past twelve months to 61% of the branded postpaid customer base at September 30, 2013, compared to only 23% at September 30, 2012.

Branded prepaid revenues increased$1.1 billion for the three months ended and $2.1 billion for the nine months endedSeptember 30, 2013, compared to the same periods in 2012. Of the increases, approximately $1.1 billion and $1.8 billion was due to the inclusion of the operating results of MetroPCS since May 1, 2013 for the three and nine months endedSeptember 30, 2013, respectively. Branded prepaid revenues, excluding MetroPCS, were fairly consistent for the three months endedSeptember 30, 2013 and increased by 26% for the nine months ended September 30, 2013 compared to the same period in 2012. This increase for the nine months endedSeptember 30, 2013 resulted primarily from an increase in average branded

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prepaid customers driven by the success of T-Mobile’s monthly prepaid service plans, including data services that have higher ARPU.

Wholesale revenuesincreased$23 million, or 17%, for the three months ended and $42 million, or 10%, for the nine months endedSeptember 30, 2013, compared to the same periods in 2012. The increase was primarily attributable to growth of the average number of MVNO customers for the period. However, a significant portion of our MVNO partners’ recent customer growth has been in lower ARPU products that result in revenues that do not increase in proportion with customer growth.

Roaming and other service revenuesdecreased$21 million, or 20%, for the three months ended and $71 million, or 21%, for the nine months endedSeptember 30, 2013, compared to the same periods in 2012. The decreases were primarily attributable to lower international voice and domestic data revenues from rate reductions entered into with certain roaming partners. Additionally, fewer early termination fees associated with the no annual service contact features of Simple Choice plans launched in March 2013 contributed to lower other service revenues.

Equipment salesincreased$913 million for the three months ended and $1.9 billion for the nine months endedSeptember 30, 2013, compared to the same periods in 2012. The increases were primarily attributed to significant growth in the number of handsets sold and an increase in the rate of customers upgrading their handset. This was driven by our introduction of both the Apple^® iPhone^® 5 and the Samsung Galaxy S^®4 in the second quarter of 2013, and the Apple^® iPhone^® 5s and iPhone^® 5c in the third quarter of 2013. Additionally, equipment sales increased due to growth in the sales of smartphones, which have a higher average revenue per unit sold as compared to other handsets. The inclusion of MetroPCS’s operating results since May 1, 2013 contributed approximately $200 million and $250 million to the increase in equipment sales for the three and nine months endedSeptember 30, 2013, respectively.

We financed $1.0 billion of the equipment revenues through equipment installment plans during the three months endedSeptember 30, 2013, an increase from $235 million in the three months endedSeptember 30, 2012. Equipment installment plan billings totaled $435 million in the three months endedSeptember 30, 2013 compared to $125 million in the three months endedSeptember 30, 2012. During the nine months endedSeptember 30, 2013, we financed $2.1 billion of equipment revenues through equipment installment plans, an increase from $571 million in the nine months endedSeptember 30, 2012. Additionally, customers had associated equipment installment plan billings of $943 million in the nine months endedSeptember 30, 2013, compared to $297 million in the nine months endedSeptember 30, 2012.

Other revenues were consistent for the three months ended and increased $42 million, or 21%, for the nine months endedSeptember 30, 2013, compared to the same periods in 2012. The increase for the nine months endedSeptember 30, 2013 was primarily due to an increase in tower site imputed rental income.

Operating Expenses

Network costsincreased$303 million, or 27%, for the three months ended and $365 million, or 10%, for the nine months endedSeptember 30, 2013, compared to the same periods in 2012. Of the increase, approximately $300 million and $500 million was due to the inclusion of the operating results of MetroPCS since May 1, 2013 for the three and nine months endedSeptember 30, 2013, respectively. Excluding network costs attributable to the MetroPCS operations, network costs decreased due to lower roaming expenses related to reduced roaming rates negotiated with our roaming partners and reduced volumes driven by a decrease in average branded customers compared to the prior year. Additionally, due to the network transition to enhanced telecommunication lines with higher capacity, we were able to accommodate higher data volumes at a lower cost.

Cost of equipment salesincreased$1.1 billion for the three months ended and $2.4 billion for the nine months endedSeptember 30, 2013, compared to the same periods in 2012. The increase in cost of equipment sales was primarily attributable to the significant increase in the volume of handsets sold during the three and nine months endedSeptember 30, 2013. Additionally, cost of equipment sales increased during the three and nine months endedSeptember 30, 2013 due to an increase in the average cost per unit of each handset sold. This was due in part to an increase in the sale of smartphones units of 139% and 77% for the three and nine months ended September 30 2013, respectively, compared to the same periods in 2012. Additionally, of the increase in cost of equipment sales, approximately $350 million and $550 million was attributable to the inclusion of operating results of MetroPCS since May 1, 2013 for the three and nine months endedSeptember 30, 2013, respectively.

Customer acquisition increased$216 million, or 26%, for the three months ended and $481 million, or 21%, for the nine months endedSeptember 30, 2013, compared to the same periods in 2012. Of the increase, approximately $150 million and $250 million was attributable to the inclusion of operating results of MetroPCS since May 1, 2013 for the three and nine months endedSeptember 30, 2013, respectively. Excluding customer acquisition costs attributable to the MetroPCS

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operations, higher commissions costs driven by increased number of customer additions further increased customer acquisition expenses during the three and nine months endedSeptember 30, 2013. For the three months endedSeptember 30, 2013 the increase was partially offset by lower promotional expenses.

General and administrative expenseincreased$54 million, or 6%, for the three months ended and decreased$199 million, or 7%, for the nine months endedSeptember 30, 2013, compared to the same periods in 2012. General and administrative expense attributable to MetroPCS since May 1, 2013 was approximately $75 million and $100 million for the three and nine months endedSeptember 30, 2013, respectively. Excluding general and administrative costs attributable to the MetroPCS operations, general and administrative expenses decreased during the three and nine months endedSeptember 30, 2013 primarily driven by $120 million and $330 million, respectively, in lower bad debt expense, net of recoveries. This decrease in bad debt expense was driven by improved credit quality of our customer portfolio. Additionally, lower employee-related expenses, as a result of restructuring initiatives implemented in the first half of 2012 contributed to the year-over-year decreases.

Depreciation and amortizationincreased$162 million, or 20%, for the three months ended and $239 million, or 10%, for the nine months endedSeptember 30, 2013, compared to the same periods in 2012. Depreciation and amortization attributable to MetroPCS since May 1, 2013 were approximately $200 million and $350 million for the three and nine months endedSeptember 30, 2013, respectively. Excluding MetroPCS’s operating results, depreciation and amortization expenses decreased as 2012 included increased depreciation expense due to changes in useful life of certain network equipment to be replaced in connection with network modernization efforts.

MetroPCS transaction and integration costs were $12 million and $51 million in the three and nine months endedSeptember 30, 2013, respectively, primarily related to personnel related change in control and professional services costs associated with the business combination between T-Mobile USA and MetroPCS.

Restructuring costs of $54 million for the nine months endedSeptember 30, 2013 were related to our 2013 cost restructuring program to align our operations to our new strategy and position the company for future growth. Costs associated with the 2013 restructuring program primarily consist of severance and other personnel-related costs. Restructuring costs of $36 million and $90 million for the three and nine months endedSeptember 30, 2012 related primarily to the consolidation of our call center operations in 2012.

Other, net for the nine months endedSeptember 30, 2013 reflects a $2 million gain on a spectrum license transaction. Other, net for the three and nine months endedSeptember 30, 2012, respectively, reflects a $179 million and $136 million gain, respectively, recorded on an AWS spectrum license exchange, partially offset by costs associated with the terminated AT&T acquisition of T-Mobile USA.

Other Income (Expense)

Interest expense to affiliates increased$18 million for the three months ended and $99 million for the nine months endedSeptember 30, 2013, compared to the same periods in 2012. The increase in interest expense was a result of higher average interest rates on debt balances with Deutsche Telekom, partially offset by the effect of the $3.3 billion reduction of debt principal in connection with the MetroPCS business combination. Prior to the closing of the business combination with MetroPCS, Deutsche Telekom recapitalized T-Mobile USA by retiring its notes payable to affiliates principal balance of $14.5 billion in exchange for new senior unsecured notes in an aggregate principal amount of $11.2 billion, which have a higher average interest rate.

Interest expenseincreased$151 million for the three months ended and $311 million for the nine months endedSeptember 30, 2013, compared to the same periods in 2012. The addition of MetroPCS long-term debt assumed during the second quarter of 2013 in connection with the business combination, resulted in an increase of approximately $80 million and $130 million in interest expense for the three and nine months endedSeptember 30, 2013, respectively, over the prior year. Additionally, interest expense of $56 million and $161 million for the three and nine months endedSeptember 30, 2013, respectively, relates to the long-term financial obligation resulting from the Tower Transaction that closed on November 30, 2012, contributed to the increase. The Tower Transaction and related impacts are further described in Note 4 of the audited Consolidated Financial Statements for the year ended December 31, 2012 included in the Current Report on Form 8-K filed on June 18, 2013.

Income Taxes

Income tax expenseincreased$30 million for the three months ended, and decreased$137 million, for the nine months endedSeptember 30, 2013, compared to the same periods in 2012. The difference in income tax expense for the three months ended

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September 30, 2013 compared to the same period in 2012 was primarily due to fluctuations in income and changes in Puerto Rico taxes. The difference in income tax expense for the nine months endedSeptember 30, 2013 compared to the same period in 2012 was primarily due to lower pre-tax income reported during the period exclusive of impairment charges reported.

In September 2013, the U.S. Department of the Treasury and the Internal Revenue Service released final regulations relating to guidance on applying tax rules to amounts paid to acquire, produce or improve tangible personal property as well as rules for materials and supplies. We are currently assessing these rules and the impacts to the financial statements, if any.

Guarantor Subsidiaries

Pursuant to the indenture and the supplemental indentures, the notes payable to affiliates and long-term debt, excluding capital leases, are fully and unconditionally guaranteed, jointly and severally, on a senior unsecured basis by T-Mobile (“Parent”) and certain of T-Mobile USA’s (“Issuer”) 100% owned subsidiaries (“Guarantor Subsidiaries”). In 2013, T-Mobile entered into an agreement with Cook Inlet to acquire all of Cook Inlet's interest in CIVS VII, a fully consolidated Non-Guarantor Subsidiary.  The transaction was completed in July 2013 and resulted in CIVS VII becoming an indirect wholly-owned subsidiary of T-Mobile USA.  CIVS VII was subsequently combined with, and the net assets transferred to, T-Mobile License LLC, a wholly-owned Restricted Subsidiary of T-Mobile USA. As a result, the net assets of CIVS VII were included in the Guarantor Subsidiaries condensed consolidating balance sheet information. The guarantees of the notes payable to affiliates and long-term debt were unchanged by the transaction.  See Note 13 – Additional Financial Information of the Notes to the Condensed Consolidated Financial Statements included in Part I, Item 1 of this Form 10-Q for more information regarding the transaction.

The financial condition of the Parent, Issuer and Guarantor Subsidiaries is substantially similar to the Company’s consolidated financial condition. Similarly, the results of operations of the Parent, Issuer and Guarantor Subsidiaries are substantially similar to the Company’s consolidated results of operations. As of September 30, 2013 and December 31, 2012, the most significant components of the financial condition of the Non-Guarantor Subsidiaries were property and equipment of $616 million and $678 million, respectively, spectrum licenses of none and $220 million, respectively, long-term financial obligations of $2.1 billion and $2.1 billion, respectively, and stockholders’ equity of $1.3 billion and $1.0 billion, respectively. The most significant components of the results of operations of our Non-Guarantor Subsidiaries for the three and nine months endedSeptember 30, 2013 were services revenues of $219 million and $586 million, respectively, offset by costs of equipment sales of $155 million and $406 million, respectively, resulting in a net comprehensive loss of $16 million and $36 million, respectively. Similarly, for the three and nine months endedSeptember 30, 2012, services revenues of $178 million and $535 million, respectively, offset by costs of equipment sales of $123 million and $342 million, respectively, resulting in a net comprehensive income of $15 million and $51 million, respectively. The change in the financial condition of the Non-Guarantor Subsidiaries was primarily due to the transfer of the net assets of CIVS VII into the Guarantor Subsidiaries condensed consolidating balance sheet information as described above. See Note 12 – Guarantor Financial Information of the Notes to the Condensed Consolidated Financial Statements included in Part I, Item 1 of this Form 10-Q for the condensed, consolidated financial information.

Performance Measures

In managing our business and assessing financial performance, we supplement the information provided by financial statement measures (“GAAP measures”), such as operating income (loss), with non-GAAP measures, including Adjusted EBITDA, Branded Cost Per Gross Addition (“Branded CPGA”) and Branded Cost Per User (“Branded CPU”), which measure the financial performance of operations, and several customer focused performance metrics that are widely used in the wireless communications industry. In addition to metrics involving the numbers of customers, these metrics also include ARPU, which measures service revenue per customer. For a reconciliation of performance measures and a further discussion of these measures, see “Reconciliation of Financial Measures”.

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The following table sets forth the number of ending customers:

(in thousands)	September 30, 2013	June 30, 2013	December 31, 2012	September 30, 2012
Customers, end of period
Branded postpaid customers	21,430	20,783	20,293	20,809
Branded prepaid customers	14,960	14,935	5,826	5,659
Total branded customers	36,390	35,718	26,119	26,468
M2M customers	3,430	3,423	3,090	2,954
MVNO customers	5,219	4,875	4,180	3,905
Total wholesale customers	8,649	8,298	7,270	6,859
Total customers, end of period	45,039	44,016	33,389	33,327

The following table sets forth the number of net customer additions (losses):

	Three Months Ended September 30,			Nine Months Ended September 30,
(in thousands)	2013	2012		2013	2012
Net customer additions (losses)
Branded postpaid customers	648	(492	)	1,137	(1,559	)
Branded prepaid customers	24	365		216	841
Total branded customers	672	(127	)	1,353	(719	)
M2M customers	7	168		340	525
MVNO customers	344	119		1,039	336
Total wholesale customers	351	287		1,379	861
Total net customer additions	1,023	160		2,732	142
Acquired Customers	—	—		8,918	—

Note: Certain customer numbers may not add due to rounding.

Total Customers

A customer is generally defined as a SIM card with a unique T-Mobile identity number which generates revenue. Branded customers include customers that are qualified either for postpaid service, where they generally pay after incurring service, or prepaid service, where they generally pay in advance. Wholesale customers include M2M and MVNO customers that operate on the T-Mobile network, but are managed by wholesale partners.

Net customer additions were 1,023,000 for the three months ended September 30, 2013, compared to net customer additions of 160,000 for the same period in 2012. Excluding customers of MetroPCS acquired as a result of the business combination, net customer additions were 2,732,000 for the nine months endedSeptember 30, 2013, compared to net customer additions of 142,000 in the same period in 2012. At September 30, 2013, we had approximately 45.0 million customers, a 35% increase from the customer total as of September 30, 2012. The increase was primarily driven by the addition of MetroPCS’s customer base due to the completion of the business combination during the second quarter of 2013, which increased the branded prepaid customer base by 8,918,000. Additionally, the increase was the result of growth in all customer segments, as described below.

Branded Customers

Branded postpaid net customer additions were 648,000 for the three months endedSeptember 30, 2013, an improvement compared to branded postpaid net customer losses of 492,000 for the same period in 2012. Branded postpaid net customer additions were 1,137,000 for the nine months endedSeptember 30, 2013, an improvement compared to branded postpaid net customer losses of 1,559,000 for the same period in 2012. The significant improvements in customer development were attributable to qualified upgrades of branded prepaid customers to branded postpaid plans, improved branded postpaid churn and increased new customer activations. T-Mobile sales benefited from the launch of the Simple Choice plans as a component of the Un-carrier strategy as well as offering the iPhone^® 5 and Samsung Galaxy S^®4 in the second quarter of 2013, and the iPhone^® 5s and iPhone^® 5c in the third quarter of 2013. This drove incremental gross additions for branded postpaid customers and improved churn as further described below.

Branded prepaid net customer additions were 24,000 for the three months endedSeptember 30, 2013, compared to branded prepaid net customer additions of 365,000 for the same period in 2012. Excluding customers of MetroPCS acquired as a result of the business combination, branded prepaid net customer additions were 216,000 for the nine months endedSeptember 30,

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2013, compared to branded prepaid net customer additions of 841,000 for the same period in 2012. The decreases were partly a result of qualified upgrades of branded prepaid customers to branded postpaid plans as the Un-carrier strategy eliminates annual service contracts to credit worthy customers that have historically been utilizing prepaid products. In addition, the robust competitive environment in the prepaid market resulted in higher branded prepaid customer deactivations partially offset by higher branded prepaid customer gross additions due in part to the expansion of the MetroPCS brand, including those launched in 15 additional markets.

Wholesale

Wholesale net customer additions were 351,000 for the three months endedSeptember 30, 2013, compared to wholesale net customer additions of 287,000 for the same period in 2012. Wholesale net customer additions were 1,379,000 for the nine months endedSeptember 30, 2013, compared to wholesale net customer additions 861,000 for the same period in 2012. The growth in MVNO customers was due in part to government subsidized Lifeline programs offered by our MVNO partners along with ongoing growth from new MVNO partnerships launched in the fourth quarter of 2012. MVNO partners often have relationships with multiple carriers and through steering their business towards carriers offering promotions can impact specific carriers’ results.

Churn

	Three Months Ended September 30,				Nine Months Ended September 30,
	2013		2012		2013		2012
Branded churn	3.1	%	3.1	%	3.1	%	3.1	%
Branded postpaid churn	1.7	%	2.3	%	1.8	%	2.3	%
Branded prepaid churn	5.0	%	6.2	%	5.5	%	6.2	%

Churn is defined as the number of customers whose service was discontinued, expressed as a percentage of the average number of customers during the specified period. The number of customers whose service was discontinued is presented net of customers that subsequently have their service restored. We believe that churn, which is a measure of customer retention and loyalty, provides relevant and useful information and is used by management to evaluate the operating performance of our business.

Branded postpaid churn was 1.7% for the three months endedSeptember 30, 2013, compared to 2.3% for the same period in 2012. Branded postpaid churn was 1.8% for the nine months endedSeptember 30, 2013, compared to 2.3% for the nine months endedSeptember 30, 2012. The significant improvements were due in part to the continued focus on churn reduction initiatives, such as improving network quality and customer sales experience. Additionally, our no annual service contract Un-carrier strategy announced in the first quarter of 2013 continued to gain positive traction with customers. We also began offering new handsets in 2013, such as Apple iPhone products and the Samsung Galaxy S4 which improved customer retention compared to the same periods in 2012.

Branded prepaid churn was 5.0% for the three months endedSeptember 30, 2013, compared to 6.2% for the same period in 2012. Branded prepaid churn was 5.5% for the nine months endedSeptember 30, 2013, compared to 6.2% for the same period in 2012. The decreases were primarily a result of the completion of the business combination with MetroPCS during the second quarter of 2013. MetroPCS customers are now the largest portion of the branded prepaid customer base and have historically had lower rates of churn. Consequently, branded prepaid churn was impacted positively by the inclusion of MetroPCS customers.

Average Revenue Per User

	Three Months Ended September 30,				Nine Months Ended September 30,
	2013		2012		2013		2012
ARPU (branded)	$	45.38	$	50.55	$	46.60	$	51.26
ARPU (branded postpaid)	$	52.20	$	56.59	$	53.27	$	57.21
ARPU (branded prepaid)	$	35.71	$	27.35	$	34.02	$	26.55

ARPU represents the average monthly service revenue earned from customers. Each of the branded ARPU metrics are calculated by dividing the corresponding branded (total branded, branded postpaid, branded prepaid) service revenues for the specified period by the corresponding average customers during the period, and further dividing by the number of months in

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the period. We believe ARPU provides management with useful information to evaluate the service revenues generated from our customer base.

Branded ARPU decreased $5.17 for the three months ended and $4.66 for the nine months endedSeptember 30, 2013, compared to the same periods in 2012. The decreases were primarily attributable to the change in customer portfolio mix towards Value and Simple Choice plans, branded prepaid and wholesale customers, all of which have lower ARPU than customers under traditional service plans bundled with a discounted handset.

Branded postpaid ARPU decreased $4.39 for the three months ended and $3.94 for the nine months endedSeptember 30, 2013, compared to the same periods in 2012. The decreases were primarily due to the continued migration of the branded postpaid customer base towards Value and Simple Choice plans, which have lower ARPU than customers under traditional service plans bundled with a discounted handset. This was offset in part by increased data revenues due to higher data plan attachment rates. Branded postpaid customers on Value and Simple Choice plans increased over the past twelve months, and at September 30, 2013, represented 61% of branded postpaid customers compared to only 23% of branded postpaid customers at September 30, 2012.

Branded prepaid ARPU increased $8.36 for the three months ended and $7.47 for the nine months endedSeptember 30, 2013, compared to the same periods in 2012. The increases were primarily due to the inclusion of MetroPCS customers which historically have higher ARPU than T-Mobile’s branded prepaid customers, as well as the growth of monthly prepaid service plans, which include data services and have higher ARPU than other T-Mobile pay-as-you-go prepaid plans.

Branded Cost Per Gross Addition and Branded Cost Per User

	Three Months Ended September 30,				Nine Months Ended September 30,
	2013		2012		2013		2012
Branded CPGA	$	307	$	382	$	322	$	388
Branded CPU	$	25	$	28	$	26	$	28

Branded CPGA is determined by dividing the costs of acquiring new customers, consisting of customer acquisition expenses plus the loss on equipment sales related to acquiring new customers for the specified period, by gross branded customer additions during the period. The loss on equipment sales related to acquiring new customers consists primarily of the excess of handset and accessory costs over related revenues incurred to acquire new customers. Additionally, the loss on equipment sales associated with retaining existing customers is excluded from this measure as Branded CPGA is intended to reflect only the acquisition costs to acquire new customers.

Branded CPGA decreased $75 for the three months ended and $66 for the nine months endedSeptember 30, 2013, compared to the same periods in 2012. The decreases were due primarily to the significant increase in branded customer gross additions which resulted in fixed acquisition costs, such as employee salaries and lease expense, being applied over a greater number of customer gross additions. This decrease was partially offset by an increase in the loss on equipment sales related to customer acquisition, due to the increased volume of handset sales and higher per unit costs due to an increasing mix of higher cost smartphones being sold.

Branded CPU is determined by dividing network costs and general and administrative expenses plus the loss on equipment sales related to customer retention, by the sum of the average monthly number of branded customers during such period. Additionally, the cost of serving customers includes the costs of providing handset insurance services.

Branded CPU decreased $3 for the three months ended and $2 for the nine months endedSeptember 30, 2013, compared to the same periods in 2012. The decreases were primarily attributable to operating costs being applied over greater average branded customers due to organic growth and the acquisition of MetroPCS customers in the second quarter of 2013 in connection with the completion of the business combination. Operating costs increased in 2013 but at a lesser rate than the increase in average branded customers. Network costs increased primarily due to the inclusion of the operating results of MetroPCS since May 1, 2013 and the higher loss on equipment sales related to customer retention due to higher volumes of smartphone sales in 2013 that have higher per unit costs. For the nine months endedSeptember 30, 2013 compared to the same period of the prior year, general and administrative expenses decreased due to improvements in bad debt expense as described in “Result of Operations” and lower employee related costs as a result of restructuring initiatives implemented in the first half of 2012.

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Adjusted EBITDA

	Three Months Ended September 30,						Nine Months Ended September 30,
(in millions)	2013			2012			2013			2012
Adjusted EBITDA	$	1,344		$	1,226		$	3,646		$	3,838
Adjusted EBITDA margin	26		%	29		%	26		%	29		%

We define Adjusted EBITDA as earnings before interest expense (net of interest income), tax, depreciation, amortization and stock-based compensation and exclude transactions that are not reflective of T-Mobile’s ongoing operating performance. Adjusted EBITDA margin, expressed as a percentage, is calculated as Adjusted EBITDA divided by total service revenues.

Adjusted EBITDA increased 10% for the three months ended but decreased 5% for the nine months endedSeptember 30, 2013 compared to the same periods in 2012. The inclusion of MetroPCS results since May 1, 2013, contributed approximately $400 million and $600 million in Adjusted EBITDA for the three and nine months endedSeptember 30, 2013, respectively. Excluding the Adjusted EBITDA contributed by MetroPCS results, Adjusted EBITDA was negatively impacted by the development in service revenues, which declined primarily due to losses in the average branded postpaid customer base and impacts from customers migrating to Value and Simple Choice plans, which result in lower ARPU. Additionally, Adjusted EBITDA was negatively impacted by increases in cost of equipment sales from higher sales volumes, partially offset by increases in equipment revenues. Increases in costs of equipment sales and equipment revenues were driven by the launch of new handsets in 2013. In addition, equipment revenues increased in 2013 due to a higher proportion of customers choosing Value and Simple Choice plans for which we do not include a bundled sale of a discounted handset.

Reconciliation of Financial Measures

A non-GAAP financial measure is defined as a numerical measure of a company’s financial performance that (i) excludes amounts, or is subject to adjustments that have the effect of excluding amounts, that are included in the comparable measure calculated and presented in accordance with GAAP in the statement of income or statement of cash flows, or (ii) includes amounts, or is subject to adjustments that have the effect of including amounts, that are excluded from the comparable measure so calculated and presented.

Branded CPGA, Branded CPU and Adjusted EBITDA are non-GAAP financial measures utilized by our management to evaluate our operating performance, and in the case of Adjusted EBITDA, our ability to meet liquidity requirements. We believe these measures are important in understanding the performance of operations from period to period, and although every company in the wireless industry may not define each of these measures in precisely the same way, we believe that these measures, which are common in the wireless industry, facilitate key operating performance comparisons with other companies in the wireless industry. The following tables reconcile our financial measures with the financial statements presented in accordance with GAAP.

Average Revenue Per User

We utilize ARPU to evaluate our per-customer service revenue realization and to assist in forecasting our future service revenues. We believe ARPU provides management with useful information to evaluate the service revenues generated from our customer base.

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The following tables illustrate the calculation of ARPU and reconciles these measures to the related service revenues, which we consider to be the most directly comparable GAAP financial measure to ARPU:

	Three Months Ended September 30,				Nine Months Ended September 30,
(in millions, except average number of customers and ARPU)	2013		2012		2013		2012
Calculation of Branded ARPU:
Branded postpaid service revenues	$	3,302	$	3,571	$	9,849	$	11,105
Branded prepaid service revenues	1,594		450		3,339		1,241
Branded Service revenues	$	4,896	$	4,021	$	13,188	$	12,346
Divided by: Average number of branded customers (in thousands) and number of months in period	35,961		26,517		31,447		26,763
Branded ARPU	$	45.38	$	50.55	$	46.60	$	51.26
Calculation of Branded Postpaid ARPU:
Branded postpaid service revenues	$	3,302	$	3,571	$	9,849	$	11,105
Divided by: Average number of branded postpaid customers (in thousands) and number of months in period	21,084		21,037		20,542		21,567
Branded Postpaid ARPU	$	52.20	$	56.59	$	53.27	$	57.21
Calculation of Branded Prepaid ARPU:
Branded prepaid service revenues	$	1,594	$	450	$	3,339	$	1,241
Divided by: Average number of branded prepaid customers (in thousands) and number of months in period	14,877		5,480		10,905		5,196
Branded Prepaid ARPU	$	35.71	$	27.35	$	34.02	$	26.55

Branded Cost Per Gross Addition and Branded Cost Per User

We utilize Branded CPGA to assess the financial investment in new customers and determine the number of months to recover customer acquisition costs. This measure also allows us to compare average acquisition costs per new customer to those of other wireless telecommunications providers. Equipment related to new customers are deducted from customer acquisition expenses in this calculation as they represent amounts paid by customers at the time their service is activated that reduce the acquisition cost of those customers. Additionally, equipment costs associated with retaining existing customers are excluded as this measure is intended to reflect only the acquisition costs related to new customers.

The following table reconciles total costs used in the calculation of Branded CPGA to customer acquisition expenses, which we consider to be the most directly comparable GAAP financial measure to Branded CPGA:

	Three Months Ended September 30,						Nine Months Ended September 30,
(in millions, except gross customer additions and CPGA)	2013			2012			2013			2012
Calculation of CPGA:
Customer acquisition expenses	$	1,039		$	823		$	2,804		$	2,323
Add: Loss on equipment sales
Equipment sales	(1,467		)	(554		)	(3,452		)	(1,524		)
Cost of equipment sales	2,015			866			4,837			2,456
Total loss on equipment sales	548			312			1,385			932
Less: Loss on equipment sales related to customer retention	(363		)	(232		)	(972		)	(663		)
Loss on equipment sales related to customer acquisition	185			80			413			269
Cost of acquiring new branded customers	$	1,224		$	903		$	3,217		$	2,592
Divided by: Gross branded customer additions (in thousands)	3,989			2,365			9,990			6,684
Branded CPGA	$	307		$	382		$	322		$	388

We utilize Branded CPU as a tool to evaluate the non-acquisition related cash expenses associated with ongoing business operations on a per customer basis, to track changes in these non-acquisition related costs over time, and to help evaluate how changes in business operations affect non-acquisition related costs per customer. In addition, Branded CPU provides management with a useful measure to compare non-acquisition related costs per customer with those of other wireless telecommunications providers.

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The following table reconciles total costs used in the calculation of Branded CPU to network costs, which we consider to be the most directly comparable GAAP financial measure to CPU:

	Three Months Ended September 30,				Nine Months Ended September 30,
(in millions, except average number of customers and CPU)	2013		2012		2013		2012
Calculation of CPU:
Network costs	$	1,444	$	1,141	$	3,880	$	3,515
Add: General and administrative expenses	894		840		2,482		2,681
Add: Loss on equipment sales related to customer retention	363		232		972		663
Total cost of serving customers	$	2,701	$	2,213	$	7,334	$	6,859
Divided by: Average number of branded customers (in thousands)	35,961		26,517		31,447		26,763
Branded CPU	$	25	$	28	$	26	$	28

Adjusted EBITDA

Adjusted EBITDA is a non-GAAP financial measure utilized by our management to monitor the financial performance of our operations. This measurement, together with GAAP measures such as revenue and operating income, assists management in its decision-making process related to the operation of our business. We use Adjusted EBITDA internally as a metric to evaluate and compensate our personnel and management for their performance, and as a benchmark to evaluate our operating performance in comparison to our competitors. Management also uses Adjusted EBITDA to measure, from period-to-period, our ability to provide cash flows to meet future debt services, capital expenditures and working capital requirements and fund future growth. We believe that analysts and investors use Adjusted EBITDA as a supplemental measure to evaluate overall operating performance and that this metric facilitates comparisons with other wireless communications companies. Adjusted EBITDA has limitations as an analytical tool and should not be considered in isolation or as a substitute for income from operations, net income, or any other measure of financial performance reported in accordance with GAAP. In addition, other wireless carriers may calculate this measure differently. Adjusted EBITDA excludes transactions that are not reflective of our ongoing operating performance and is detailed in the tables below.

The following table illustrates the calculation of Adjusted EBITDA and reconciles Adjusted EBITDA to net income which we consider to be the most directly comparable GAAP financial measure to Adjusted EBITDA:

	Three Months Ended September 30,						Nine Months Ended September 30,
(in millions)	2013			2012			2013			2012
Calculation of Adjusted EBITDA:
Net income (loss)	$	(36	)	$	(7,735	)	$	55		$	(7,328	)
Adjustments:
Interest expense to affiliates	183			165			586			487
Interest expense	151			—			311			—
Interest income	(50		)	(20		)	(125		)	(53		)
Other (income) expense, net	7			(15		)	(105		)	(22		)
Income tax expense	42			12			135			272
Operating income (loss)	297			(7,593		)	857			(6,644		)
Depreciation and amortization	987			825			2,630			2,391
Impairment charge	—			8,134			—			8,134
MetroPCS transaction and integration costs	12			—			51			—
Restructuring costs	—			36			54			90
Stock-based compensation	48			—			54			—
Other, net (1)	—			(176		)	—			(133		)
Adjusted EBITDA	$	1,344		$	1,226		$	3,646		$	3,838

(1) Other, net of $176 million and $133 million for the three and nine months endedSeptember 30, 2012, respectively, primarily related to a net gain from a spectrum swap transacted in the third quarter of 2012. Other, net transactions may not agree in total to the other, net classification in the Consolidated Statements of Income and Comprehensive Income due to certain routine operating activities, such as insignificant routine spectrum license exchanges that would be expected to reoccur, and are therefore not excluded from the calculation of Adjusted EBITDA.

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Liquidity and Capital Resources

Our principal sources of liquidity are cash and cash equivalents, and cash generated from operations. As of September 30, 2013, our cash and cash equivalents were $2.4 billion. In addition, we have entered into an unsecured revolving credit facility with Deutsche Telekom that allows for up to $500 million in borrowings. We expect our current sources of funding to be sufficient to meet the anticipated liquidity requirements of the Company in the next 12 months. We determine future liquidity requirements, for both operations and capital expenditures, based in large part upon projected financial and operating performance. We regularly review and update these projections for changes in current and projected financial and operating results, general economic conditions, the competitive landscape and other factors. There are a number of risks and uncertainties that could cause our financial and operating results and capital requirements to differ materially from our projections, which could cause future liquidity to differ materially from our assessment. We may seek to raise additional debt or equity capital to the extent our projections regarding our liquidity requirements change, or on an opportunistic basis when there are favorable market conditions.

Prior to the completion of the business combination on April 30, 2013, our sources of liquidity were cash and cash equivalents and short-term investments with Deutsche Telekom included in accounts receivable from affiliates, and cash generated from operations. As of December 31, 2012, our cash and cash equivalents were $394 million and short-term investments with Deutsche Telekom were $650 million.

As of September 30, 2013, our total capital consisted of notes payable to affiliates of $11.2 billion, third-party long-term debt of $6.8 billion, and stockholders’ equity of $12.4 billion. Prior to the closing of the business combination with MetroPCS, Deutsche Telekom effected a recapitalization of T-Mobile USA. T-Mobile USA’s notes payable to affiliates, with a total principal balance of $14.5 billion, were extinguished, interest rate and cross currency interest rate swaps related to the extinguished notes were settled, and $11.2 billion of new unsecured senior notes were issued to Deutsche Telekom. The new senior unsecured notes are divided equally between reset and non-reset notes with weighted average interest rates of 5.578% and 6.836%, respectively, and ratable annual maturities ranging from 2019 through 2023. Further, in 2013, Deutsche Telekom sold a portion of its senior non-reset notes in an aggregate principal amount of $5.6 billion to third parties. See Note 7 – Notes Payable to Affiliates and Debt and Note 14 – Subsequent Events of the Notes to the Condensed Consolidated Financial Statements included in Part I, Item 1 of this Form 10-Q.

Stockholders’ equity increased $6.3 billion from December 31, 2012 due to the effects of the recapitalization, the deemed issuance of stock to MetroPCS stockholders, exercise of stock options and net income for the nine months endedSeptember 30, 2013. As part of the recapitalization, Deutsche Telekom contributed to T-Mobile approximately $3.1 billion in additional equity. In connection with the business combination with MetroPCS, common stock representing approximately 74% of the total shares outstanding was issued to Deutsche Telekom. However, as the transaction was accounted for as a reverse acquisition, stockholders’ equity reflects a $3.0 billion increase for shares deemed issued to MetroPCS stockholders in consideration for their minority share. Additionally, as part of the business combination, we acquired $2.1 billion of cash and cash equivalents and assumed long-term debt of MetroPCS with an aggregate fair value amount of $6.3 billion.

The indentures governing the notes payables to affiliates and long-term debt, excluding capital leases, contain covenants that, among other things, limit the ability of the Company and subsidiary guarantors to: incur more debt; pay dividends and make distributions; make certain investments; repurchase stock; create liens or other encumbrances; enter transactions with affiliates; enter into transactions that restrict dividends or distributions from subsidiaries; and merge, consolidate, or sell, or otherwise dispose of, substantially all of their assets. Certain provisions of each of the indentures and the supplemental indentures relating to the long-term debt restrict the ability of the Issuer to loan funds or make payments to the Parent. However, the Issuer is allowed to make certain permitted payments to the Parent under the terms of each of the indentures and the supplemental indentures relating to the long-term debt.

Capital Expenditures

The construction of our network and the marketing and distribution of our wireless communications products and services have required, and will continue to require, substantial amounts of liquidity. Our liquidity requirements have been driven primarily by capital expenditures for spectrum licenses and the construction, expansion and upgrade of our network infrastructure.

The property and equipment capital expenditures for the nine months endedSeptember 30, 2013, primarily relate to T-Mobile’s network modernization and deployment of 4G LTE in 2013. The capital expenditures for the nine months endedSeptember 30, 2012, were primarily associated with the continued expansion of our network coverage. During 2012, we were developing plans to deploy 4G LTE in 2013 after the terminated AT&T transaction. As such, capital spending was lower in 2012 than in subsequent periods.

47

We expect cash capital expenditures for property and equipment and spectrum licenses on a pro forma combined basis, including MetroPCS results for the full year, to be in the range of $4.2 billion to $4.4 billion for the year ending December 31, 2013.

Cash Flows

The following table shows cash flow information for the nine months endedSeptember 30, 2013 and 2012:

	Nine Months Ended September 30,
(in millions)	2013			2012
Net cash provided by operating activities	$	2,541		$	2,707
Net cash used in investing activities	(868		)	(2,667		)
Net cash provided by financing activities	298			—

The historical cash flows of T-Mobile USA should not be considered representative of the anticipated cash flows of T-Mobile US, Inc., the combined company resulting from the business combination.

Operating Activities

Cash provided by operating activities was $2.5 billion for the nine months endedSeptember 30, 2013, compared to $2.7 billion for the same period in 2012. The decrease in cash flow provided by operating activities was driven by several factors. Our operating income, exclusive of non-cash items such as impairment charges and depreciation and amortization, declined compared to the same period in the prior year primarily as a result of decreases in branded postpaid revenues. This decrease was partially offset by improvement in cash flows from changes in working capital, including MetroPCS’s cash flows for the period from May 1, 2013 through September 30, 2013.

Investing Activities

Cash used in investing activities was $868 million during the nine months endedSeptember 30, 2013, compared to $2.7 billion used during the same period in 2012. The decrease was primarily due to the $2.1 billion of cash and cash equivalents we acquired in connection with the business combination with MetroPCS and a $327 million decrease in purchases of intangible assets. The decrease was partially offset by $1.1 billion higher purchases of property and equipment during the nine months endedSeptember 30, 2013, as compared to the same period in 2012, as a result of T-Mobile’s network modernization and deployment of 4G LTE in 2013 described above.

Financing Activities

Cash provided by financing activities was $298 million for the nine months endedSeptember 30, 2013, compared to no cash from financing activities for the same period in 2012. The increase was primarily due to net proceeds of $498 million from the issuance of long-term debt and proceeds of $116 million from the exercises of stock options issued under the Predecessor Plans of MetroPCS. The increase was offset by repayments of short-term debt for purchases of property and equipment of $194 million, a distribution to Deutsche Telekom of $41 million in connection with the debt recapitalization and $80 million relating to the purchase of Cook Inlet's interest in CIVS VII.

Contractual Obligations

Current accounting standards require disclosure of material obligations and commitments to making future payments under contracts, such as debt, lease agreements, and purchase obligations. See Note 7 – Notes Payable to Affiliates and Debt and Note 11 – Commitments and Contingencies of the Notes to the Condensed Consolidated Financial Statements included in Part I, Item 1 of this Form 10-Q.

48

The following table provides aggregate information about T-Mobile’s contractual obligations as of September 30, 2013:

(in millions)	Less Than 1 Year		1 - 3 Years		3 - 5 Years		More Than 5 Years		Total
Long-term debt, including current portion (1)	$	—	$	—	$	1,500	$	15,700	$	17,200
Interest expense on long-term debt	446		2,177		2,177		3,753		8,553
Financial obligation (2)	162		324		324		1,491		2,301
Non-dedicated transportation lines	604		1,116		622		164		2,506
Operating leases, including dedicated transportation lines	2,201		4,027		3,469		5,566		15,263
Capital lease obligations, including interest	40		83		87		306		516
Purchase obligations (3)	1,352		426		2,393		—		4,171
Total contractual obligations	$	4,805	$	8,153	$	10,572	$	26,980	$	50,510

(1) Represents principal amounts of payables to affiliates and long-term debt at maturity, excluding unamortized premium from purchase price allocation fair value adjustment and capital lease obligations.

(2) Future minimum payments, including principal and interest payments and imputed lease rental income related to the financial obligation recorded in connection with the Tower Transaction. See Note 4 – Tower Transaction to the audited consolidated financial statements for the three years ended December 31, 2012, included in the Current Report on Form 8-K filed on June 18, 2013 for further information regarding the Tower Transaction.

(3) T-Mobile calculated the minimum obligation for certain agreements to purchase goods or services based on termination fees that can be paid to exit the contract. Termination penalties are included in the above table as payments due in less than one year, as this is the earliest T-Mobile could exit these contracts. This table does not include open purchase orders as of September 30, 2013 under normal business purposes.

Certain commitments and obligations are included in the table based on the year of required payment or an estimate of the year of payment. Other non-current liabilities have been excluded from the tables due to the uncertainty of the timing of payments, combined with the absence of historical trending to be used as a predictor of such payments.

The purchase obligations reflected in the table above are primarily commitments to purchase handsets and accessories, equipment, software, programming and network services, and marketing activities, which will be used or sold in the ordinary course of business. These amounts do not represent T-Mobile’s entire anticipated purchases in the future, but represent only those items for which T-Mobile is contractually committed. Where T-Mobile is committed to make a minimum payment to the supplier regardless of whether it takes delivery, T-Mobile has included only that minimum payment as a purchase obligation.

Off-Balance Sheet Arrangements

T-Mobile does not participate in or secure financing for any unconsolidated entities.

Related Party Transactions

See Note 10 – Related Party Transactions of the Notes to the Condensed Consolidated Financial Statements included in Part I, Item 1 of this Form 10-Q for information regarding related party transactions.

Disclosure of Iranian Activities under Section 13(r) of the Securities Exchange Act of 1934

Section 219 of the Iran Threat Reduction and Syria Human Rights Act of 2012 added Section 13(r) to the Exchange Act.  Section 13(r) requires an issuer to disclose in its annual or quarterly reports, as applicable, whether it or any of its affiliates knowingly engaged in certain activities, transactions or dealings relating to Iran or with designated natural persons or entities involved in terrorism or the proliferation of weapons of mass destruction.  Disclosure is required even where the activities, transactions or dealings are conducted outside the U.S. by non-U.S. affiliates in compliance with applicable law, and whether or not the activities are sanctionable under U.S. law.

As of the date of this report, we are not aware of any activity, transaction or dealing by us or any of our affiliates during the quarter ended September 30, 2013 that requires disclosure in this report under Section 13(r) of the Exchange Act, except as set forth below with respect to affiliates that we do not control and that are our affiliates solely due to their common control with Deutsche Telekom AG. We have relied upon Deutsche Telekom AG for information regarding their activities, transactions and dealings.

Deutsche Telekom AG, through certain of its non-U.S. subsidiaries, is party to roaming and interconnect agreements with the following mobile and fixed line telecommunication providers in Iran, some of which are or may be government-controlled

49

entities: Gostaresh Ertebatat Taliya, Irancell Telecommunications Services Company (MTN Irancell), Telecommunication Kish Company, Mobile Telecommunication Company of Iran, and Telecommunication Infrastructure Company of Iran. During the quarter ended September 30, 2013, gross revenues of all Deutsche Telekom AG affiliates generated by roaming and interconnection traffic with Iran were less than $3 million and estimated net profits were less than $1 million.

In addition, Deutsche Telekom AG, through certain of its non-U.S. subsidiaries, operating a fixed line network in their respective European home countries (in particular Germany), provides telecommunications services in the ordinary course of business to the Embassy of Iran in those European countries. Gross revenues and net profits recorded from these during the quarter ended September 30, 2013 were less than $0.1 million. We understand that Deutsche Telekom AG intends to continue these activities.

Restructuring Costs

See Note 13 – Additional Financial Information of the Notes to the Condensed Consolidated Financial Statements included in Part I, Item 1 of this Form 10-Q for information regarding restructuring costs.

Critical Accounting Policies and Estimates

Preparation of our consolidated financial statements in accordance with GAAP requires us to make estimates and assumptions that affect the reported amounts of certain assets, liabilities, revenues and expenses, as well as related disclosure of contingent assets and liabilities. There have been no material changes to the critical accounting policies and estimates previously disclosed in our consolidated financial statements for the three years ended December 31, 2012 on the Current Report on Form 8-K filed on June 18, 2013, except for the addition of the following:

Stock-based Compensation

Stock-based compensation cost for stock awards, which includes RSU and PSU awards, is measured at fair value on the grant date and recognized as an expense, net of expected forfeitures, over the related service period. The fair value of stock awards is based on the closing price of T-Mobile common stock on the date of grant. RSUs are recognized as expense using the straight-line method. PSUs are recognized as expense following a graded vesting schedule. Judgment is required in estimating the amount of stock awards which are expected to be forfeited. If actual results differ significantly from our expected forfeitures, stock-based compensation expense and our results of operations could be impacted.

Guarantee Liabilities

In July 2013, T-Mobile launched JUMP!, a handset upgrade program, that provides eligible customers a specific-price trade-in right to upgrade their handset when they want, up to twice a year following completion of an initial six-month enrollment period. Participating customers must finance their handset using our equipment installment plan (“EIP”). Upon upgrading, the customer will receive a credit in the amount of their outstanding EIP balance provided they trade in their used handset and purchase a new handset from T-Mobile.

For customers who enroll in the trade-in program, T-Mobile defers a portion of equipment sales revenue which represents the estimated value of the specified-price trade-in right guarantee. The guarantee liabilities are valued based on various economic and customer behavioral assumptions, which requires judgment, including primarily the customer's estimated remaining EIP balance at trade-in, the expected fair value of the used handset at trade-in, and the trade-in probability for each month over the term of the EIP. The guarantee is recognized as equipment sales when the customer upgrades their handset or T-Mobile is otherwise relieved of its performance obligation. All assumptions are reviewed periodically.

Item 3. Quantitative and Qualitative Disclosures About Market Risk

T-Mobile is exposed to economic risks in the normal course of business, primarily from changes in interest rates. These risks, along with other business risks, impact our cost of capital. Our policy is to manage exposure related to fluctuations in interest rates in order to manage capital costs, control financial risks and maintain financial flexibility over the long term. We have established interest rate risk limits that are closely monitored by measuring interest rate sensitivities of its debt and interest rate derivatives portfolios. We do not foresee significant changes in the strategies used to manage market risk in the near future.

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Interest Rate Risk

We are exposed to changes in interest rates, primarily on its variable-rate notes payable to affiliates. As of September 30, 2013, we had $11.2 billion in notes payable with Deutsche Telekom, of which $5.6 billion was variable-rate. Changes in interest rates can lead to significant fluctuations in the fair value of our variable-rate debt instruments.

To perform the sensitivity analysis on its variable-rate notes payable to affiliates, we assessed the risk of a change in the fair value from the effect of a hypothetical interest rate change of 100 basis points. As of September 30, 2013, the change in the fair value of our notes payable to affiliates, based on this hypothetical change, is shown in the table below:

			Fair Value Assuming
(in millions)	Fair Value		+100 Basis Point Shift		-100 Basis Point Shift
Variable-rate notes payable to affiliates	$	5,480	$	5,395	$	5,560

Item 4. Controls and Procedures

Disclosure Controls and Procedures

We maintain disclosure controls and procedures designed to ensure information required to be disclosed in our reports filed or submitted under the Securities Exchange Act of 1934, as amended (“Exchange Act”), is recorded, processed, summarized and reported with the time period specified in the Securities and Exchange Commission’s rules and forms. Our disclosure controls and procedures include, without limitation, controls and procedures designed to ensure that information required to be disclosed in the reports we file or submit is accumulated and communicated to our management, including our Chief Executive Officer and Chief Financial Officer, as appropriate to allow timely decisions regarding required disclosure.

Our management, with the participation of our Chief Executive Officer and Chief Financial Officer, evaluated the effectiveness of our disclosure controls and procedures as of the end of the period covered by this report. Based on that evaluation, the Chief Executive Officer and Chief Financial Officer concluded our disclosure controls and procedures were effective as of September 30, 2013.

Internal Controls over Financial Reporting

Our management is responsible for establishing and maintaining adequate internal control over financial reporting. Internal control over financial reporting is a process designed to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles. Internal control over financial reporting includes policies and procedures for maintaining records that in reasonable detail accurately and fairly reflect our transactions; providing reasonable assurance that transactions are recorded as necessary for preparation of our financial statements; providing reasonable assurance that receipts and expenditures are made in accordance with management authorization; and providing reasonable assurance of prevention or timely detection of unauthorized acquisition, use or disposition of company assets that could have a material effect on our financial statements. Because of its inherent limitations, internal control over financial reporting is not intended to provide absolute assurance that a misstatement of our financial statements would be prevented or detected. The business combination of MetroPCS and T-Mobile USA, which was completed on April 30, 2013, had a material impact on the financial position, results of operations and cash flows of the combined entity from the date of acquisition through September 30, 2013. The business combination also resulted in significant changes to the combined entity’s internal control environment over financial reporting. We are in the process of integrating the systems of internal control over financial reporting for T-Mobile and MetroPCS and will report on our assessment of our internal controls over financial reporting for the combined entity in our next annual report.

We implemented a new accounting consolidation system during the quarter ending June 30, 2013. In connection with this implementation, we modified various procedures, including but not limited to, business processes such as user access security, data conversion, standardization and automation of system reporting. We monitored and continue to monitor these changes as they relate to our internal control over financial reporting.

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PART II. OTHER INFORMATION

Item 1. Legal Proceedings

See Note 11 – Commitments and Contingencies of the Notes to the Condensed Consolidated Financial Statements included in Part I, Item 1 of this Form 10-Q for information regarding certain legal proceedings in which we are involved.

Item 1A. Risk Factors

There have been no material changes in our risk factors as previously disclosed in Part II, Item 1A of our Quarterly Report on Form 10-Q for the quarter ended June 30, 2013 filed on August 8, 2013.

Item 2. Unregistered Sales of Equity Securities and Use of Proceeds

None.

Item 3. Defaults Upon Senior Securities

None.

Item 4. Mine Safety Disclosures

None.

Item 5. Other Information

None.

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Item 6. Exhibits

		Incorporated by Reference
Exhibit No.	Exhibit Description	Form	Date of First Filing	Exhibit Number	Filed Herein
4.1	Thirteenth Supplemental Indenture, dated as of August 21, 2013, by and among T-Mobile USA, Inc., the Guarantors (as defined therein) and Deutsche Bank Trust Company Americas, as trustee, including the Form of 5.250% Senior Notes due 2018.	8-K	8/21/2013	4.1
10.1	Registration Rights Agreement, dated as of August 21, 2013, by and among T-Mobile USA, Inc., the Guarantors (as defined therein), and Deutsche Bank Securities Inc., as Initial Purchaser (as defined therein).	8-K	8/21/2013	10.1
10.2	T-Mobile US, Inc. Executive Continuity Plan as Amended and Restated Effective as of January 1, 2014.	8-K	10/25/2013	10.1
31.1	Certifications of Chief Executive Officer Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002.				X
31.2	Certifications of Chief Financial Officer Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002.				X
32.1*	Certification of Chief Executive Officer Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002.
32.1*	Certification of Chief Financial Officer Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002.
101.INS	XBRL Instance Document.				X
101.SCH	XBRL Taxonomy Extension Schema Document.				X
101.CAL	XBRL Taxonomy Extension Calculation Linkbase Document.				X
101.DEF	XBRL Taxonomy Extension Definition Linkbase Document				X
101.LAB	XBRL Taxonomy Extension Label Linkbase Document.				X
101.PRE	XBRL Taxonomy Extension Presentation Linkbase Document.				X

*    Furnished herein.

53

SIGNATURE

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned thereunto duly authorized.

	T-MOBILE US, INC.
November 7, 2013	/s/ J. Braxton Carter
	J. Braxton Carter Executive Vice President and Chief Financial Officer (Duly Authorized Officer)

54

EX-31.1

Exhibit 31.1

Certifications of Chief Executive Officer Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002

I, John J. Legere, certify that:

1. I have reviewed this quarterly report on Form 10-Q of T-Mobile US, Inc.;

2. Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report;

3. Based on my knowledge, the financial statements, and other financial information included in this report, fairly present in all material respects the financial condition, results of operations and cash flows of the registrant as of, and for, the periods presented in this report;

4. The registrant's other certifying officer and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal control over financial reporting (as defined in Exchange Act Rules 13a-15(f) and 15d-15(f)) for the registrant and have:

(a) Designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure that material information relating to the registrant, including its consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in which this report is being prepared;

(b) Designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under our supervision, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles;

(c) Evaluated the effectiveness of the registrant's disclosure controls and procedures and presented in this report our conclusions about the effectiveness of the disclosure controls and procedures, as of the end of the period covered by this report based on such evaluation; and

(d) Disclosed in this report any change in the registrant's internal control over financial reporting that occurred during the registrant's most recent fiscal quarter (the registrant's fourth fiscal quarter in the case of an annual report) that has materially affected, or is reasonably likely to materially affect, the registrant's internal control over financial reporting; and

5. The registrant's other certifying officer and I have disclosed, based on our most recent evaluation of internal control over financial reporting, to the registrant's auditors and the audit committee of the registrant's board of directors (or persons performing the equivalent functions):

(a) All significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably likely to adversely affect the registrant's ability to record, process, summarize and report financial information; and

(b) Any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant's internal control over financial reporting.

November 7, 2013

/s/ John J. Legere

John J. Legere

President and Chief Executive Officer

EX-31.2

Exhibit 31.2

Certifications of Chief Financial Officer Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002

I, J. Braxton Carter, certify that:

1. I have reviewed this quarterly report on Form 10-Q of T-Mobile US, Inc.;

2. Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report;

3. Based on my knowledge, the financial statements, and other financial information included in this report, fairly present in all material respects the financial condition, results of operations and cash flows of the registrant as of, and for, the periods presented in this report;

4. The registrant's other certifying officer and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal control over financial reporting (as defined in Exchange Act Rules 13a-15(f) and 15d-15(f)) for the registrant and have:

(a) Designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure that material information relating to the registrant, including its consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in which this report is being prepared;

(b) Designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under our supervision, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles;

(c) Evaluated the effectiveness of the registrant's disclosure controls and procedures and presented in this report our conclusions about the effectiveness of the disclosure controls and procedures, as of the end of the period covered by this report based on such evaluation; and

(d) Disclosed in this report any change in the registrant's internal control over financial reporting that occurred during the registrant's most recent fiscal quarter (the registrant's fourth fiscal quarter in the case of an annual report) that has materially affected, or is reasonably likely to materially affect, the registrant's internal control over financial reporting; and

5. The registrant's other certifying officer and I have disclosed, based on our most recent evaluation of internal control over financial reporting, to the registrant's auditors and the audit committee of the registrant's board of directors (or persons performing the equivalent functions):

(a) All significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably likely to adversely affect the registrant's ability to record, process, summarize and report financial information; and

(b) Any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant's internal control over financial reporting.

November 7, 2013

/s/ J. Braxton Carter

J. Braxton Carter

Executive Vice President and Chief Financial Officer

EX-32.1

Exhibit 32.1

Certification of Chief Executive Officer Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002

In connection with the Quarterly Report of T-Mobile US, Inc. (the “Company”), on Form 10-Q for the quarter ended September 30, 2013, as filed with the Securities and Exchange Commission (the “Report”), John J. Legere, President and Chief Executive Officer of the Company, does hereby certify, pursuant to § 906 of the Sarbanes-Oxley Act of 2002 (18 U.S.C. § 1350), that to his knowledge:

1. The Report fully complies with the requirements of section 13(a) or 15(d) of the Securities Exchange Act of 1934; and

2. The information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the Company.

November 7, 2013

/s/ John J. Legere

John J. Legere

President and Chief Executive Officer

EX-32.2

Exhibit 32.2

Certification of Chief Financial Officer Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002

In connection with the Quarterly Report of T-Mobile US, Inc. (the “Company”), on Form 10-Q for the quarter ended September 30, 2013, as filed with the Securities and Exchange Commission (the “Report”), J. Braxton Carter, Executive Vice President and Chief Financial Officer of the Company, does hereby certify, pursuant to § 906 of the Sarbanes-Oxley Act of 2002 (18 U.S.C. § 1350), that to his knowledge:

1. The Report fully complies with the requirements of section 13(a) or 15(d) of the Securities Exchange Act of 1934; and

2. The information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the Company.

November 7, 2013

/s/ J. Braxton Carter

J. Braxton Carter

Executive Vice President and Chief Financial Officer

XML

Related Party Transactions

9 Months Ended

Sep. 30, 2013

Related Party Transactions [Abstract]

Related Party Transactions

Note 10 – Related Party Transactions

Prior to the closing of the business combination, Deutsche Telekom recapitalized T-Mobile by retiring T-Mobile’s notes payable to affiliates principal balance and all related derivative instruments in exchange for new unsecured senior notes and additional paid-in capital provided by Deutsche Telekom. In connection with the debt recapitalization, other outstanding balances with Deutsche Telekom were settled. See Note 2 – Transaction with MetroPCS for further information regarding the business combination and the effects on additional paid-in capital as a result of the debt recapitalization and the settlement of the other outstanding balances with Deutsche Telekom. Further, in October 2013, Deutsche Telekom sold a portion of the senior unsecured notes to third parties. See Note 14 – Subsequent Events for further information.

Additionally, T-Mobile has related party transactions associated with Deutsche Telekom or its affiliates in the ordinary course of business, which are included in various line items in the condensed consolidated financial statements.

The following table summarizes the significant balances with Deutsche Telekom or its affiliates in the condensed consolidated balance sheets:

(in millions)	September 30, 2013		December 31, 2012
Assets
Accounts receivable from affiliates	$	19	$	682
Interest rate swaps	—		106
Cross currency interest rate swaps	—		144
Liabilities
Current payables to affiliates	$	305	$	1,619
Long-term payables to affiliates	11,200		13,655

The following table summarizes the impact of significant transactions with Deutsche Telekom or its affiliates in the condensed consolidated statements of comprehensive income (loss):

	Three Months Ended September 30,				Nine Months Ended September 30,
(in millions)	2013		2012		2013			2012
Fees incurred for use of the T-Mobile brand	$	14	$	12	$	39		$	37
Expenses for telecommunications and IT services	27		23		77			94
Interest expense to affiliates	183		165		586			487
Net gain (loss) recorded in other comprehensive income (loss), net of tax	—		23		(39		)	19

Lines of Credit

T-Mobile has an unsecured revolving credit facility with Deutsche Telekom that allows for up to $500 million in borrowings. T-Mobile had no borrowings outstanding under this facility as of September 30, 2013. On March 29, 2013, T-Mobile amended and restated its credit agreement with U.S. Bank National Association that allows for the issuance of letters of credit in the aggregate amount of $100 million through June 30, 2014.  For the purposes of securing T-Mobile’s obligation under the credit agreement, Deutsche Telekom issued a letter of credit on T-Mobile’s behalf.

XML

Notes Payable to Affiliates and Debt (Long-term Debt) (Details) (USD $) In Millions, unless otherwise specified	Sep. 30, 2013	Dec. 31, 2012	Sep. 30, 2013 5.250% Senior Notes due 2018 [Member]	Aug. 31, 2013 5.250% Senior Notes due 2018 [Member]	Sep. 30, 2013 7.875% Senior Notes due 2018 [Member]	Sep. 30, 2013 6.625% Senior Notes due 2020 [Member]	Sep. 30, 2013 6.250% Senior Notes due 2021 [Member]	Sep. 30, 2013 6.625% Senior Notes due 2023 [Member]	Apr. 30, 2013 MetroPCS [Member]
Debt Instrument [Line Items]
Long-term debt	$ 6,778		$ 500		$ 1,000	$ 1,000	$ 1,750	$ 1,750
Long-term debt									6,277
Capital lease obligation, acquired in business combination									333
Long-term debt issued, principal				500
Unamortized premium from purchase price allocation fair value adjustment	422
Capital leases	356
Current portion of capital leases	17
Long-term debt	$ 6,761	$ 0
Interest rate, stated percentage			5.25%		7.875%	6.625%	6.25%	6.625%

XML

Condensed Consolidated Statements of Comprehensive Income (Loss) (Unaudited) (USD $) In Millions, except Share data, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Revenues
Branded postpaid revenues	$ 3,302	$ 3,571	$ 9,849	$ 11,105
Branded prepaid revenues	1,594	450	3,339	1,241
Wholesale revenues	157	134	449	407
Roaming and other service revenues	85	106	262	333
Total service revenues	5,138	4,261	13,899	13,086
Equipment sales	1,467	554	3,452	1,524
Other revenues	83	78	242	200
Total revenues	6,688	4,893	17,593	14,810
Operating expenses
Network costs	1,444	1,141	3,880	3,515
Cost of equipment sales	2,015	866	4,837	2,456
Customer acquisition	1,039	823	2,804	2,323
General and administrative	894	840	2,482	2,681
Depreciation and amortization	987	825	2,630	2,391
MetroPCS transaction and integration costs	12	0	51	0
Impairment charges	0	8,134	0	8,134
Restructuring costs	0	36	54	90
Other, net	0	(179)	(2)	(136)
Total operating expenses	6,391	12,486	16,736	21,454
Operating income (loss)	297	(7,593)	857	(6,644)
Other income (expense)
Interest expense to affiliates	(183)	(165)	(586)	(487)
Interest expense	(151)	0	(311)	0
Interest income	50	20	125	53
Other income (expense), net	(7)	15	105	22
Total other expense, net	(291)	(130)	(667)	(412)
Income (loss) before income taxes	6	(7,723)	190	(7,056)
Income tax expense	42	12	135	272
Net income (loss)	(36)	(7,735)	55	(7,328)
Other comprehensive income (loss), net of tax
Net gain on cross currency interest rate swaps, net of tax effect of $0, $36, $13 and $10	0	60	23	17
Net gain (loss) on foreign currency translation, net of tax effect of $0, $(22), $(37) and $2	0	(37)	(62)	2
Unrealized gain on available-for-sale securities, net of tax effect of $0, $0, $0 and $0	0	1	0	0
Other comprehensive income (loss), net of tax	0	24	(39)	19
Total comprehensive income (loss)	$ (36)	$ (7,711)	$ 16	$ (7,309)
Earnings (loss) per share
Basic	$ (0.05)	$ (14.45)	$ 0.09	$ (13.69)
Diluted	$ (0.05)	$ (14.45)	$ 0.09	$ (13.69)
Weighted average shares outstanding
Basic	726,877,458	535,286,077	642,957,645	535,286,077
Diluted	726,877,458	535,286,077	645,520,524	535,286,077

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Equipment Installment Plan Receivables

9 Months Ended

Sep. 30, 2013

Receivables [Abstract]

Equipment Installment Plan Receivables

Note 3 – Equipment Installment Plan Receivables

T-Mobile offers certain retail customers the option to pay for their devices and other purchases in installments over a period of up to 24 months. At the time of sale, T-Mobile imputes risk adjusted interest on the installment receivables and records the deferred interest as a reduction to equipment revenues and the related accounts receivable. Interest income is recognized over the financed installment term. The current portion of T-Mobile’s equipment installment plan receivables included in accounts receivable, net was $1.1 billion and $475 million as of September 30, 2013 and December 31, 2012, respectively. The long-term portion of the equipment installment plan receivables included in other assets was $750 million and $216 million as of September 30, 2013 and December 31, 2012, respectively.

Credit Quality

T-Mobile assesses the collectability of the equipment installment plan receivables based upon a variety of factors, including aging of the accounts receivable portfolio, credit quality of the customer base, historical write-off experience, payment trends and other qualitative factors such as macro-economic conditions.

Based upon customer credit profiles, T-Mobile classifies customer receivables into the categories of “Prime” and “Subprime”. Prime customer receivables are those with lower delinquency risk and Subprime customer receivables are those with higher delinquency risk. Some customers within the Subprime category are required to pay an advance deposit for equipment financed under the equipment installment plan or may be required to pay a higher down payment on the equipment purchase. Equipment sales that are not reasonably assured to be collectible are recorded on a cash basis as payments are received.

The balance and aging of the equipment installment plan receivables on a gross basis by credit category were as follows:

	September 30, 2013						December 31, 2012
	Credit Category						Credit Category
(in millions)	Prime		Subprime		Total		Prime		Subprime		Total
Unbilled	$	1,084	$	953	$	2,037	$	337	$	432	$	769
Billed - Current	35		39		74		13		21		34
Billed - Past due	11		20		31		3		10		13
Equipment installment plan receivables, gross	$	1,130	$	1,012	$	2,142	$	353	$	463	$	816

T-Mobile records equipment installment bad debt expense based on an estimate of the percentage of equipment revenue that will not be collected. This estimate was based on a number of factors including historical write-off experience, credit quality of the customer base, and other factors such as macro-economic conditions. T-Mobile monitors the aging of its equipment installment plan receivables and writes off account balances if collection efforts were unsuccessful and future collection was unlikely based on customer credit ratings and the length of time from the original billing date.

Activity in the allowance for credit losses for the equipment installment plan receivables was as follows:

(in millions)	September 30, 2013
Allowance, December 31, 2012	$	125
Change in deferred interest on short-term and long-term installment receivables	112
Bad debt expense	118
Write-offs	(79		)
Allowance, September 30, 2013	$	276

The allowance for credit losses includes deferred interest of $222 million and $110 million as of September 30, 2013 and December 31, 2012, respectively.

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Equipment Installment Plan Receivables (Tables)

9 Months Ended

Sep. 30, 2013

Receivables [Abstract]

Schedule of Equipment Installment Plan Receivables by Credit Category

The balance and aging of the equipment installment plan receivables on a gross basis by credit category were as follows:

	September 30, 2013						December 31, 2012
	Credit Category						Credit Category
(in millions)	Prime		Subprime		Total		Prime		Subprime		Total
Unbilled	$	1,084	$	953	$	2,037	$	337	$	432	$	769
Billed - Current	35		39		74		13		21		34
Billed - Past due	11		20		31		3		10		13
Equipment installment plan receivables, gross	$	1,130	$	1,012	$	2,142	$	353	$	463	$	816

Allowance for Credit Losses

Activity in the allowance for credit losses for the equipment installment plan receivables was as follows:

(in millions)	September 30, 2013
Allowance, December 31, 2012	$	125
Change in deferred interest on short-term and long-term installment receivables	112
Bad debt expense	118
Write-offs	(79		)
Allowance, September 30, 2013	$	276

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Additional Financial Information (Components of AOCI) (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Increase (Decrease) in Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Balance, beginning of period			$ 41
Unrealized gains (losses) arising during the period			32
Reclassification adjustments recognized in net income			(71)
Other comprehensive income (loss), net of tax	0	24	(39)	19
Balance, end of period	2		2
Interest expense to affiliates	183	165	586	487
Other income (expense), net	7	(15)	(105)	(22)
Income tax effect	42	12	135	272
Reclassifications to net income, net of tax	(36)	(7,735)	55	(7,328)
Cross Currency Interest Rate Swaps [Member]
Increase (Decrease) in Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Balance, beginning of period			(23)
Unrealized gains (losses) arising during the period			(10)
Reclassification adjustments recognized in net income			33
Other comprehensive income (loss), net of tax			23
Balance, end of period	0		0
Foreign Currency Translation [Member]
Increase (Decrease) in Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Balance, beginning of period			62
Unrealized gains (losses) arising during the period			42
Reclassification adjustments recognized in net income			(104)
Other comprehensive income (loss), net of tax			(62)
Balance, end of period	0		0
Available-for-Sale Securities [Member]
Increase (Decrease) in Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Balance, beginning of period			2
Unrealized gains (losses) arising during the period			0
Reclassification adjustments recognized in net income			0
Other comprehensive income (loss), net of tax			0
Balance, end of period	2		2
Reclassification out of Accumulated Other Comprehensive Income [Member]
Increase (Decrease) in Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Reclassifications to net income, net of tax	0		(71)
Reclassification out of Accumulated Other Comprehensive Income [Member] | Cross Currency Interest Rate Swaps [Member]
Increase (Decrease) in Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Interest expense to affiliates	0		53
Income tax effect	0		(20)
Reclassifications to net income, net of tax	0		33
Reclassification out of Accumulated Other Comprehensive Income [Member] | Foreign Currency Translation [Member]
Increase (Decrease) in Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Other income (expense), net	0		(166)
Income tax effect	0		62
Reclassifications to net income, net of tax	$ 0		$ (104)

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Stock-Based Compensation (Stock Awards) (Details) (USD $) In Millions, except Share data, unless otherwise specified	3 Months Ended	9 Months Ended
	Sep. 30, 2013	Sep. 30, 2013
2013 Omnibus Incentive Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares authorized for issuance	63,000,000	63,000,000
Shares available for future grant	40,000,000	40,000,000
Performance Stock Units (PSUs) [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting period		2 years 6 months
Restricted Stock Units (RSUs) and Performance Stock Units (PSUs) [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unrecognized stock-based compensation expense	$ 379	$ 379
Weighted-average period for recognition		2 years 6 months
Share-based Compensation, Allocation and Classification in Financial Statements:
Stock-based compensation expense	48	54
Income tax benefit related to stock-based compensation	$ 18	$ 21
Shares
Nonvested, Beginning		0
Granted		24,584,884
Vested		(17,866)
Forfeited		(962,345)
Nonvested, Ending	23,604,673	23,604,673
Weighted Average Grant-Date Fair Value
Nonvested, Beginning		$ 0.00
Granted		$ 22.03
Vested		$ 21.20
Forfeited		$ 21.20
Nonvested, Ending	$ 22.06	$ 22.06
Minimum [Member] | Restricted Stock Units (RSUs) [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting period		1 year
Maximum [Member] | Restricted Stock Units (RSUs) [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting period		4 years

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Commitments and Contingencies

9 Months Ended

Sep. 30, 2013

Commitments and Contingencies Disclosure [Abstract]

Commitments and Contingencies

Note 11 – Commitments and Contingencies

Operating Leases

T-Mobile has operating leases with local exchange carriers for dedicated transportation lines with varying expiration terms through 2021.

T-Mobile has other operating leases for cell sites, switch sites, retail stores and office facilities with contractual terms expiring between 2013 and 2028. The majority of cell site leases have an initial term of five years to ten years, with renewal options for several additional five-year periods. The Company considers unexercised renewal options on leases as being reasonably assured of exercise, and thus included in future minimum lease payments for a total term of approximately 15 years from inception or acquisition of the lease.

Future minimum payments for dedicated transportation lines and other operating leases over their remaining terms, including reasonably assured renewals, are summarized below:

(in millions)	Dedicated Transportation Lines		Other Operating Leases
Twelve Months Ending September 30,
2014	$	248	$	1,953
2015	161		1,921
2016	79		1,866
2017	44		1,784
2018	19		1,622
Thereafter	5		5,561
Total	$	556	$	14,707

In addition, as of September 30, 2013, the Company was contingently liable for approximately $677 million in future ground lease payments as the Company remains an obligor on the ground leases related to the Tower Transaction sites. This contingent rent is not included in the above table as any amounts due under ground leases are contractually owed by CCI based on T-Mobile's subleasing arrangement with CCI. For further information, see Note 4 – Tower Transaction to the audited Consolidated Financial Statements for the three years ended December 31, 2012, included in the Current Report on Form 8-K filed on June 18, 2013.

Aggregate rental expense for transportation lines under operating leases was $148 million and $129 million for the three months endedSeptember 30, 2013 and 2012, respectively, and $414 million and $420 million for the nine months endedSeptember 30, 2013 and 2012, respectively. Aggregate rental expense for cell sites, switch sites, retail stores and office facilities, including accounting for lease expense on a straight line basis, was $562 million and $482 million for the three months endedSeptember 30, 2013 and 2012, respectively, and $1.6 billion and $1.4 billion for the nine months endedSeptember 30, 2013 and 2012, respectively.

Other Commitments

T-Mobile has commitments with local exchange carriers for non-dedicated transportation lines with varying expiration terms through 2021. The original terms of these commitments vary from five years to ten years. Additionally, the Company has entered into various other commitments with a variety of suppliers primarily to purchase handsets, network services, equipment, software, marketing sponsorship agreements and other items in the ordinary course of business, with various terms, through 2018. These amounts are not reflective of the Company’s entire anticipated purchases under the related agreements, but are determined based on the non-cancelable quantities or termination amounts to which the Company was contractually obligated. Additionally, in the second quarter of 2013, T-Mobile entered into a purchase agreement with United States Cellular Corporation (“U.S. Cellular”) for the acquisition of Advanced Wireless Services spectrum (“AWS spectrum”) for $308 million in cash, which was included in Other Purchase Commitments below. The transaction was completed in October 2013. See Note 14 – Subsequent Events for further information.

Future minimum payments for non-dedicated transportation lines and other purchase commitments over their remaining terms are summarized below:

(in millions)	Non-Dedicated Transportation Lines		Other Purchase Commitments
Twelve months ending September 30,
2014	$	604	$	1,352
2015	583		260
2016	533		166
2017	443		2,335
2018	179		58
Thereafter	164		—
Total	$	2,506	$	4,171

Contingencies and Litigation

T-Mobile is involved in putative stockholder derivative and class action lawsuits challenging the business combination with MetroPCS. These lawsuits include:

• Paul Benn v. MetroPCS Communications, Inc. et al., Case No. C.A. 7938-CS filed on October 11, 2012 in the Delaware Court of Chancery;

• Joseph Marino v. MetroPCS Communications, Inc. et al., Case No. C.A. 7940-CS filed on October 11, 2012 in the Delaware Court of Chancery;

• Robert Picheny v. MetroPCS Communications, Inc. et al., Case No. C.A. 7971-CS filed on October 22, 2012 in the Delaware Court of Chancery;

• James McLearie v. MetroPCS Communications, Inc. et al., Case No. C.A. 8009-CS filed on November 5, 2012 in the Delaware Court of Chancery;

• Adam Golovoy et al. v. Deutsche Telekom et al., Cause No. CC-12-06144-A filed on October 10, 2012 in the Dallas, Texas County Court at Law; and

• Nagendra Polu et al. v. Deutsche Telekom et al., Cause No. CC-12-06170-E filed on October 10, 2012 in the Dallas, Texas County Court at Law.

The lawsuits allege that the various defendants breached fiduciary duties, or aided and abetted in the alleged breach of fiduciary duties, to the MetroPCS stockholders by entering into the transaction. The complaints allege claims for relief including, among other things, rescission to the extent the terms of the business combination have already been implemented, damages for the breaches of fiduciary duty, and the payment of plaintiffs’ attorneys’ fees and costs. In addition, on March 28, 2013, another lawsuit challenging the transaction and related disclosures, and alleging breaches of fiduciary duty to MetroPCS shareholders was filed in the U.S. District Court for the Southern District of New York entitled The Merger Fund et al. v. MetroPCS Communications, Inc. et al. The New York case was settled, and the complaint was dismissed with prejudice on September 30, 2013; and in the Delaware cases, plaintiffs have agreed to dismiss their claims and the parties have reached a settlement in principle. T-Mobile intends to defend the remaining Texas lawsuits vigorously and does not expect resolution of these matters to have a material adverse effect on T-Mobile’s financial position, results of operations or cash flows.

T-Mobile and its subsidiaries are involved in numerous lawsuits, regulatory proceedings, and other similar matters, including class actions and intellectual property claims, that arise in the ordinary course of business. Legal proceedings are inherently unpredictable, and often present complex legal and factual issues and can include claims for large amounts of damages.  In T-Mobile’s opinion at this time, these proceedings, both individually and in the aggregate, should not have a material adverse effect on T-Mobile’s financial position, results of operations or cash flows. These statements are based on T-Mobile’s current understanding and assessment of relevant facts and circumstances. As such, T-Mobile’s view of these matters is subject to inherent uncertainties and may change in the future.

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Goodwill, Spectrum Licenses and Intangible Assets (Other Intangibles) (Details) (USD $) In Millions, unless otherwise specified									9 Months Ended
	Sep. 30, 2013	Dec. 31, 2012	Sep. 30, 2013 Customer List [Member]	Dec. 31, 2012 Customer List [Member]	Sep. 30, 2013 Trademark [Member]	Dec. 31, 2012 Trademark [Member]	Sep. 30, 2013 Other [Member]	Dec. 31, 2012 Other [Member]	Sep. 30, 2013 Minimum [Member] Customer List [Member]	Sep. 30, 2013 Minimum [Member] Trademark [Member]	Sep. 30, 2013 Maximum [Member] Customer List [Member]	Sep. 30, 2013 Maximum [Member] Trademark [Member]	Sep. 30, 2013 Maximum [Member] Other [Member]	Apr. 30, 2013 MetroPCS [Member]	Apr. 30, 2013 MetroPCS [Member] Customer List [Member]	Apr. 30, 2013 MetroPCS [Member] Trademark [Member]	Apr. 30, 2013 MetroPCS [Member] Other [Member]
Finite-Lived Intangible Assets [Line Items]
Other intangible assets			$ 1,313	$ 209	$ 291	$ 55	$ 97	$ 58
Accumulated amortization	(404)	(243)
Other intangible assets, net of accumulated amortization	1,297	79
Intangible assets														1,376	1,100	233	39
Intangible assets, useful lives									1 year	1 year	6 years	8 years	28 years
Future Amortization Expense:
Remainder of 2013	92
2014	333
2015	278
2016	222
2017	163
Thereafter	$ 209

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Stock-Based Compensation (Stock Options) (Details) (Predecessor Plans [Member], USD $) In Millions, except Share data, unless otherwise specified	5 Months Ended
	Sep. 30, 2013
Predecessor Plans [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock options, exercised	8,358,830
Stock options, exercised, weighted average exercise price	$ 13.92
Cash received from exercise of stock options	$ 116
Stock options, outstanding	8,200,306
Stock options, outstanding, weighted average exercise price	$ 25.59
Stock options, outstanding, weighted average remaining contractual term	4 years
Stock options, exercisable	8,200,306
Stock options, exercisable, weighted average exercise price	$ 25.59
Stock options, exercisable, weighted average remaining contractual term	4 years

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Transaction with MetroPCS (Reverse Stock Split) (Details)	0 Months Ended	9 Months Ended	0 Months Ended	9 Months Ended	0 Months Ended
	Apr. 30, 2013 MetroPCS [Member]	Sep. 30, 2013 Common Stock [Member]	Apr. 30, 2013 Common Stock [Member] MetroPCS [Member]	Sep. 30, 2013 Treasury Stock [Member]	Apr. 30, 2013 Treasury Stock [Member] MetroPCS [Member]
Business Acquisition [Line Items]
Shares issued during period, reverse merger	535,286,077
Percentage of voting interests acquired by Deutsche Telekom	74.00%
MetroPCS shares converted upon reverse merger, shares		184,487,309	184,487,309	1,382,505	1,382,505

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Fair Value Measurements and Derivative Instruments (Tables)

9 Months Ended

Sep. 30, 2013

Fair Value Disclosures [Abstract]

Summary of Fair Value of Financial Instruments by Level

Fair value of financial instruments measured on a recurring basis by level were as follows:

	Balance Sheet Location	September 30, 2013
(in millions)		Level 1		Level 2		Level 3		Total
Assets
Nonqualified deferred compensation	Long-term investments	$	34	$	—	$	—	$	34
Liabilities
Nonqualified deferred compensation	Other long-term liabilities	34		—		—		34

	Balance Sheet Location	December 31, 2012
(in millions)		Level 1		Level 2		Level 3		Total
Assets
Interest rate swaps	Other current assets	$	—	$	106	$	—	$	106
Cross currency interest rate swaps	Other assets	—		144		—		144
Nonqualified deferred compensation	Long-term investments	31		—		—		31
Liabilities
Nonqualified deferred compensation	Other long-term liabilities	31		—		—		31

Schedule of Gains (Losses) on Derivative Instruments

The following table summarizes the activity related to derivatives instruments:

	Three Months Ended September 30,				Nine Months Ended September 30,
(in millions)	2013		2012		2013			2012
Gain (loss) recognized in other comprehensive income (loss):
Cross currency interest rate swaps	$	—	$	92	$	(17	)	$	15
Gain recognized in interest expense to affiliates:
Interest rate swaps	—		28		8			74
Cross currency interest rate swaps	—		4		53			11

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Goodwill, Spectrum Licenses and Intangible Assets (Tables)

9 Months Ended

Sep. 30, 2013

Goodwill and Intangible Assets Disclosure [Abstract]

Schedule of Goodwill and Spectrum Licenses

Carrying values of goodwill and spectrum licenses were as follows:

(in millions)	September 30, 2013		December 31, 2012
Goodwill	$	1,683	$	—
Spectrum licenses	18,414		14,550

Schedule of Finite-Lived Intangible Assets

The components of intangible assets were as follows:

(in millions)	Useful Lives	September 30, 2013			December 31, 2012
Customer lists	1 - 6 years	$	1,313		$	209
Trademarks	1 - 8 years	291			55
Other	Up to 28 years	97			58
Accumulated amortization		(404		)	(243		)
Other intangible assets, net		$	1,297		$	79

XML

Property and Equipment (Details) (USD $) In Millions, unless otherwise specified					9 Months Ended			9 Months Ended				9 Months Ended				9 Months Ended
	Sep. 30, 2013	Dec. 31, 2012	Sep. 30, 2013 Building and Improvements [Member]	Dec. 31, 2012 Building and Improvements [Member]	Sep. 30, 2013 Building and Improvements [Member] Maximum [Member]	Sep. 30, 2013 Wireless Communications Systems [Member]	Dec. 31, 2012 Wireless Communications Systems [Member]	Sep. 30, 2013 Wireless Communications Systems [Member] Minimum [Member]	Sep. 30, 2013 Wireless Communications Systems [Member] Maximum [Member]	Sep. 30, 2013 Capitalized Software [Member]	Dec. 31, 2012 Capitalized Software [Member]	Sep. 30, 2013 Capitalized Software [Member] Minimum [Member]	Sep. 30, 2013 Capitalized Software [Member] Maximum [Member]	Sep. 30, 2013 Equipment and Furniture [Member]	Dec. 31, 2012 Equipment and Furniture [Member]	Sep. 30, 2013 Equipment and Furniture [Member] Minimum [Member]	Sep. 30, 2013 Equipment and Furniture [Member] Maximum [Member]	Sep. 30, 2013 Construction in Progress [Member]	Dec. 31, 2012 Construction in Progress [Member]	Apr. 30, 2013 MetroPCS [Member]	Apr. 30, 2013 MetroPCS [Member] Building and Improvements [Member]	Apr. 30, 2013 MetroPCS [Member] Wireless Communications Systems [Member]	Apr. 30, 2013 MetroPCS [Member] Capitalized Software [Member]	Apr. 30, 2013 MetroPCS [Member] Equipment and Furniture [Member]	Apr. 30, 2013 MetroPCS [Member] Construction in Progress [Member]
Property, Plant and Equipment [Line Items]
Property and equipment			$ 695	$ 676		$ 23,908	$ 21,147			$ 6,198	$ 5,078			$ 2,286	$ 1,991			$ 1,603	$ 1,659
Accumulated depreciation and amortization	(19,320)	(17,744)
Property and equipment, net of accumulated depreciation of $19,320 and $17,744	15,370	12,807
Property and equipment																				$ 1,475	$ 14	$ 960	$ 162	$ 268	$ 71
Useful lives					40 years			2 years	20 years			2 years	7 years			2 years	5 years

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Consolidation and Basis of Presentation Business Combination (Details) (MetroPCS [Member])	Apr. 30, 2013
MetroPCS [Member]
Business Acquisition [Line Items]
Percentage of voting interests acquired by Deutsche Telekom	74.00%

XML

Transaction with MetroPCS (Preliminary Purchase Price Allocation) (Details) (USD $) In Millions, unless otherwise specified	Sep. 30, 2013	Dec. 31, 2012	Apr. 30, 2013 MetroPCS [Member]
Business Acquisition [Line Items]
Cash and cash equivalents			$ 2,144
Accounts receivable, net			98
Inventory			171
Other current assets			240
Property and equipment			1,475
Spectrum licenses			3,818
Other intangible assets			1,376
Other assets			10
Total assets acquired			9,332
Accounts payable and accrued liabilities			475
Deferred revenues			187
Other current liabilities			15
Deferred tax liabilities			735
Long-term debt			6,277
Other long-term liabilities			355
Total liabilities assumed			8,044
Net identifiable assets acquired			1,288
Goodwill	1,683	0	1,683
Net assets acquired			$ 2,971

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Fair Value Measurements and Derivative Instruments (Narrative) (Details) (USD $) In Billions, unless otherwise specified	Sep. 30, 2013 derivative_instruments	Dec. 31, 2012 derivative_instruments
Interest Rate Swaps [Member]
Derivative
Number of interest rate swap agreements	0	7
Notional amounts		$ 3.6
Cross Currency Interest Rate Swaps [Member]
Derivative
Number of cross currency interest rate swap agreements	0	3
Notional amounts		$ 2.3

XML

Commitments and Contingencies (Tables)

9 Months Ended

Sep. 30, 2013

Commitments and Contingencies Disclosure [Abstract]

Schedule of Future Minimum Rental Payments for Operating Leases

Future minimum payments for dedicated transportation lines and other operating leases over their remaining terms, including reasonably assured renewals, are summarized below:

(in millions)	Dedicated Transportation Lines		Other Operating Leases
Twelve Months Ending September 30,
2014	$	248	$	1,953
2015	161		1,921
2016	79		1,866
2017	44		1,784
2018	19		1,622
Thereafter	5		5,561
Total	$	556	$	14,707

Schedule of Other Commitments

Future minimum payments for non-dedicated transportation lines and other purchase commitments over their remaining terms are summarized below:

(in millions)	Non-Dedicated Transportation Lines		Other Purchase Commitments
Twelve months ending September 30,
2014	$	604	$	1,352
2015	583		260
2016	533		166
2017	443		2,335
2018	179		58
Thereafter	164		—
Total	$	2,506	$	4,171

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Guarantor Financial Information (Condensed Consolidating Statement of Comprehensive Income (Loss) Information) (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Revenues
Service revenues	$ 5,138	$ 4,261	$ 13,899	$ 13,086
Equipment sales	1,467	554	3,452	1,524
Other revenues	83	78	242	200
Total revenues	6,688	4,893	17,593	14,810
Operating expenses
Network costs	1,444	1,141	3,880	3,515
Cost of equipment sales	2,015	866	4,837	2,456
Customer acquisition	1,039	823	2,804	2,323
General and administrative	894	840	2,482	2,681
Depreciation and amortization	987	825	2,630	2,391
MetroPCS transaction and integration costs	12	0	51	0
Impairment charges	0	8,134	0	8,134
Restructuring costs	0	36	54	90
Other, net	0	(179)	(2)	(136)
Total operating expenses	6,391	12,486	16,736	21,454
Operating income (loss)	297	(7,593)	857	(6,644)
Other income (expense)
Interest expense to affiliates	(183)	(165)	(586)	(487)
Interest expense	(151)	0	(311)	0
Interest income	50	20	125	53
Other income (expense), net	(7)	15	105	22
Total other expense, net	(291)	(130)	(667)	(412)
Income (loss) before income taxes	6	(7,723)	190	(7,056)
Income tax expense	42	12	135	272
Earnings (loss) of subsidiaries	0	0	0	0
Net income (loss)	(36)	(7,735)	55	(7,328)
Other comprehensive income (loss), net of tax	0	24	(39)	19
Total comprehensive income (loss)	(36)	(7,711)	16	(7,309)
Consolidating and Eliminating Adjustments [Member]
Revenues
Service revenues	(39)	(28)	(91)	(80)
Equipment sales	(176)	(144)	(500)	(409)
Other revenues	(6)	(34)	(74)	(105)
Total revenues	(221)	(206)	(665)	(594)
Operating expenses
Network costs	(5)	(34)	(73)	(105)
Cost of equipment sales	(192)	(161)	(547)	(456)
Customer acquisition	0	0	0	0
General and administrative	(24)	(11)	(45)	(33)
Depreciation and amortization	0	0	0	0
MetroPCS transaction and integration costs	0		0
Impairment charges		0		0
Restructuring costs		0	0	0
Other, net		0	0	0
Total operating expenses	(221)	(206)	(665)	(594)
Operating income (loss)	0	0	0	0
Other income (expense)
Interest expense to affiliates	0	0	0	0
Interest expense	0		0
Interest income	0	0	0	0
Other income (expense), net	0	0	0	0
Total other expense, net	0	0	0	0
Income (loss) before income taxes	0	0	0	0
Income tax expense	0	0	0	0
Earnings (loss) of subsidiaries	(191)	7,589	(549)	6,869
Net income (loss)	(191)	7,589	(549)	6,869
Other comprehensive income (loss), net of tax	0	14	(24)	12
Total comprehensive income (loss)	(191)	7,603	(573)	6,881
Parent [Member]
Revenues
Service revenues	0	0	0	0
Equipment sales	0	0	0	0
Other revenues	0	0	0	0
Total revenues	0	0	0	0
Operating expenses
Network costs	0	0	0	0
Cost of equipment sales	0	0	0	0
Customer acquisition	0	0	0	0
General and administrative	0	0	0	0
Depreciation and amortization	0	0	0	0
MetroPCS transaction and integration costs	0		0
Impairment charges		0		0
Restructuring costs		0	0	0
Other, net		0	0	0
Total operating expenses	0	0	0	0
Operating income (loss)	0	0	0	0
Other income (expense)
Interest expense to affiliates	0	0	0	0
Interest expense	0		0
Interest income	0	0	0	0
Other income (expense), net	0	0	0	0
Total other expense, net	0	0	0	0
Income (loss) before income taxes	0	0	0	0
Income tax expense	0	0	0	0
Earnings (loss) of subsidiaries	(36)	0	(83)	0
Net income (loss)	(36)	0	(83)	0
Other comprehensive income (loss), net of tax	0	0	0	0
Total comprehensive income (loss)	(36)	0	(83)	0
Issuer [Member]
Revenues
Service revenues	0	0	0	0
Equipment sales	0	0	0	0
Other revenues	0	0	0	0
Total revenues	0	0	0	0
Operating expenses
Network costs	0	0	0	0
Cost of equipment sales	0	0	0	0
Customer acquisition	0	0	0	0
General and administrative	0	0	0	0
Depreciation and amortization	0	0	0	0
MetroPCS transaction and integration costs	0		0
Impairment charges		0		0
Restructuring costs		0	0	0
Other, net		0	0	0
Total operating expenses	0	0	0	0
Operating income (loss)	0	0	0	0
Other income (expense)
Interest expense to affiliates	(183)	(155)	(586)	(475)
Interest expense	(84)		(138)
Interest income	0	0	0	0
Other income (expense), net	(9)	9	105	16
Total other expense, net	(276)	(146)	(619)	(459)
Income (loss) before income taxes	(276)	(146)	(619)	(459)
Income tax expense	0	0	0	0
Earnings (loss) of subsidiaries	240	(7,589)	674	(6,869)
Net income (loss)	(36)	(7,735)	55	(7,328)
Other comprehensive income (loss), net of tax	0	24	(39)	19
Total comprehensive income (loss)	(36)	(7,711)	16	(7,309)
Guarantor Subsidiaries [Member]
Revenues
Service revenues	4,958	4,111	13,404	12,631
Equipment sales	1,643	698	3,952	1,933
Other revenues	59	95	200	253
Total revenues	6,660	4,904	17,556	14,817
Operating expenses
Network costs	1,443	1,158	3,907	3,568
Cost of equipment sales	2,052	904	4,978	2,570
Customer acquisition	1,039	823	2,804	2,323
General and administrative	871	817	2,409	2,600
Depreciation and amortization	966	825	2,568	2,391
MetroPCS transaction and integration costs	12		51
Impairment charges		8,134		8,134
Restructuring costs		36	54	90
Other, net		(179)	(2)	(136)
Total operating expenses	6,383	12,518	16,769	21,540
Operating income (loss)	277	(7,614)	787	(6,723)
Other income (expense)
Interest expense to affiliates	0	(10)	0	(12)
Interest expense	(24)		(44)
Interest income	50	20	125	53
Other income (expense), net	2	6	0	6
Total other expense, net	28	16	81	47
Income (loss) before income taxes	305	(7,598)	868	(6,676)
Income tax expense	49	6	158	244
Earnings (loss) of subsidiaries	(13)	0	(42)	0
Net income (loss)	243	(7,604)	668	(6,920)
Other comprehensive income (loss), net of tax	0	(14)	24	(12)
Total comprehensive income (loss)	243	(7,618)	692	(6,932)
Non-Guarantor Subsidiaries [Member]
Revenues
Service revenues	219	178	586	535
Equipment sales	0	0	0	0
Other revenues	30	17	116	52
Total revenues	249	195	702	587
Operating expenses
Network costs	6	17	46	52
Cost of equipment sales	155	123	406	342
Customer acquisition	0	0	0	0
General and administrative	47	34	118	114
Depreciation and amortization	21	0	62	0
MetroPCS transaction and integration costs	0		0
Impairment charges		0		0
Restructuring costs		0	0	0
Other, net		0	0	0
Total operating expenses	229	174	632	508
Operating income (loss)	20	21	70	79
Other income (expense)
Interest expense to affiliates	0	0	0	0
Interest expense	(43)		(129)
Interest income	0	0	0	0
Other income (expense), net	0	0	0	0
Total other expense, net	(43)	0	(129)	0
Income (loss) before income taxes	(23)	21	(59)	79
Income tax expense	(7)	6	(23)	28
Earnings (loss) of subsidiaries	0	0	0	0
Net income (loss)	(16)	15	(36)	51
Other comprehensive income (loss), net of tax	0	0	0	0
Total comprehensive income (loss)	$ (16)	$ 15	$ (36)	$ 51

XML

Guarantor Financial Information (Condensed Consolidating Balance Sheet Information) (Details) (USD $) In Millions, unless otherwise specified	Sep. 30, 2013	Dec. 31, 2012	Sep. 30, 2012	Dec. 31, 2011
Current assets
Cash and cash equivalents	$ 2,365	$ 394	$ 430	$ 390
Accounts receivable, net of allowances for uncollectible accounts	3,370	2,678
Accounts receivable from affiliates	19	682
Inventory	761	457
Current portion of deferred tax assets, net	773	655
Other current assets	676	675
Total current assets	7,964	5,541
Property and equipment, net of accumulated depreciation	15,370	12,807
Goodwill	1,683	0
Spectrum licenses	18,414	14,550
Other intangible assets, net of accumulated amortization	1,297	79
Investments in unconsolidated affiliates	55	63
Investments in subsidiaries, net	0	0
Intercompany receivables	0	0
Long-term investments	36	31
Other assets	948	551
Total assets	45,767	33,622
Current liabilities
Accounts payable and accrued liabilities	4,324	3,475
Current payables to affiliates	305	1,619
Short-term debt	195	0
Deferred revenue	447	290
Other current liabilities	243	208
Total current liabilities	5,514	5,592
Long-term payables to affiliates	11,200	13,655
Long-term debt	6,761	0
Long-term financial obligation	2,488	2,461
Deferred tax liabilities	4,695	3,618
Deferred rents	2,062	1,884
Negative carrying value of subsidiaries, net	0	0
Intercompany payables	0	0
Other long-term liabilities	632	297
Total long-term liabilities	27,838	21,915
Total stockholders' equity	12,415	6,115
Total liabilities and stockholders' equity	45,767	33,622
Consolidating and Eliminating Adjustments [Member]
Current assets
Cash and cash equivalents	0	0	0	0
Accounts receivable, net of allowances for uncollectible accounts	0	0
Accounts receivable from affiliates	0	0
Inventory	0	0
Current portion of deferred tax assets, net	0	0
Other current assets	0	0
Total current assets	0	0
Property and equipment, net of accumulated depreciation	0	0
Goodwill	0
Spectrum licenses	0	0
Other intangible assets, net of accumulated amortization	0	0
Investments in unconsolidated affiliates	0	0
Investments in subsidiaries, net	(34,783)	(24,823)
Intercompany receivables	(3,019)	(3,831)
Long-term investments	0	0
Other assets	(29)	0
Total assets	(37,831)	(28,654)
Current liabilities
Accounts payable and accrued liabilities	0	0
Current payables to affiliates	0	0
Short-term debt	0
Deferred revenue	0	0
Other current liabilities	0	0
Total current liabilities	0	0
Long-term payables to affiliates	0	0
Long-term debt	0
Long-term financial obligation	0	0
Deferred tax liabilities	(29)	0
Deferred rents	0	0
Negative carrying value of subsidiaries, net	(767)	(489)
Intercompany payables	(3,019)	(3,831)
Other long-term liabilities	0	0
Total long-term liabilities	(3,815)	(4,320)
Total stockholders' equity	(34,016)	(24,334)
Total liabilities and stockholders' equity	(37,831)	(28,654)
Parent [Member]
Current assets
Cash and cash equivalents	1,157	0	0	0
Accounts receivable, net of allowances for uncollectible accounts	0	0
Accounts receivable from affiliates	0	0
Inventory	0	0
Current portion of deferred tax assets, net	0	0
Other current assets	0	0
Total current assets	1,157	0
Property and equipment, net of accumulated depreciation	0	0
Goodwill	0
Spectrum licenses	0	0
Other intangible assets, net of accumulated amortization	0	0
Investments in unconsolidated affiliates	0	0
Investments in subsidiaries, net	9,328	0
Intercompany receivables	1,927	0
Long-term investments	3	0
Other assets	0	0
Total assets	12,415	0
Current liabilities
Accounts payable and accrued liabilities	0	0
Current payables to affiliates	0	0
Short-term debt	0
Deferred revenue	0	0
Other current liabilities	0	0
Total current liabilities	0	0
Long-term payables to affiliates	0	0
Long-term debt	0
Long-term financial obligation	0	0
Deferred tax liabilities	0	0
Deferred rents	0	0
Negative carrying value of subsidiaries, net	0	0
Intercompany payables	0	0
Other long-term liabilities	0	0
Total long-term liabilities	0	0
Total stockholders' equity	12,415	0
Total liabilities and stockholders' equity	12,415	0
Issuer [Member]
Current assets
Cash and cash equivalents	984	0	0	0
Accounts receivable, net of allowances for uncollectible accounts	0	0
Accounts receivable from affiliates	0	0
Inventory	0	0
Current portion of deferred tax assets, net	0	0
Other current assets	4	106
Total current assets	988	106
Property and equipment, net of accumulated depreciation	0	0
Goodwill	0
Spectrum licenses	0	0
Other intangible assets, net of accumulated amortization	0	0
Investments in unconsolidated affiliates	15	19
Investments in subsidiaries, net	25,455	24,823
Intercompany receivables	1,073	0
Long-term investments	0	0
Other assets	4	147
Total assets	27,535	25,095
Current liabilities
Accounts payable and accrued liabilities	189	0
Current payables to affiliates	201	1,494
Short-term debt	178
Deferred revenue	0	0
Other current liabilities	0	0
Total current liabilities	568	1,494
Long-term payables to affiliates	11,200	13,655
Long-term debt	6,424
Long-term financial obligation	0	0
Deferred tax liabilities	0	0
Deferred rents	0	0
Negative carrying value of subsidiaries, net	0	0
Intercompany payables	0	3,831
Other long-term liabilities	15	0
Total long-term liabilities	17,639	17,486
Total stockholders' equity	9,328	6,115
Total liabilities and stockholders' equity	27,535	25,095
Guarantor Subsidiaries [Member]
Current assets
Cash and cash equivalents	89	287	360	339
Accounts receivable, net of allowances for uncollectible accounts	3,256	2,607
Accounts receivable from affiliates	19	682
Inventory	761	457
Current portion of deferred tax assets, net	758	640
Other current assets	666	565
Total current assets	5,549	5,238
Property and equipment, net of accumulated depreciation	14,754	12,129
Goodwill	1,683
Spectrum licenses	18,414	14,330
Other intangible assets, net of accumulated amortization	1,297	79
Investments in unconsolidated affiliates	40	44
Investments in subsidiaries, net	0	0
Intercompany receivables	0	3,760
Long-term investments	33	31
Other assets	894	352
Total assets	42,664	35,963
Current liabilities
Accounts payable and accrued liabilities	4,007	3,382
Current payables to affiliates	104	125
Short-term debt	17
Deferred revenue	447	290
Other current liabilities	203	168
Total current liabilities	4,778	3,965
Long-term payables to affiliates	0	0
Long-term debt	337
Long-term financial obligation	364	360
Deferred tax liabilities	4,724	3,603
Deferred rents	2,062	1,884
Negative carrying value of subsidiaries, net	767	489
Intercompany payables	3,019	0
Other long-term liabilities	617	297
Total long-term liabilities	11,890	6,633
Total stockholders' equity	25,996	25,365
Total liabilities and stockholders' equity	42,664	35,963
Non-Guarantor Subsidiaries [Member]
Current assets
Cash and cash equivalents	135	107	70	51
Accounts receivable, net of allowances for uncollectible accounts	114	71
Accounts receivable from affiliates	0	0
Inventory	0	0
Current portion of deferred tax assets, net	15	15
Other current assets	6	4
Total current assets	270	197
Property and equipment, net of accumulated depreciation	616	678
Goodwill	0
Spectrum licenses	0	220
Other intangible assets, net of accumulated amortization	0	0
Investments in unconsolidated affiliates	0	0
Investments in subsidiaries, net	0	0
Intercompany receivables	19	71
Long-term investments	0	0
Other assets	79	52
Total assets	984	1,218
Current liabilities
Accounts payable and accrued liabilities	128	93
Current payables to affiliates	0	0
Short-term debt	0
Deferred revenue	0	0
Other current liabilities	40	40
Total current liabilities	168	133
Long-term payables to affiliates	0	0
Long-term debt	0
Long-term financial obligation	2,124	2,101
Deferred tax liabilities	0	15
Deferred rents	0	0
Negative carrying value of subsidiaries, net	0	0
Intercompany payables	0	0
Other long-term liabilities	0	0
Total long-term liabilities	2,124	2,116
Total stockholders' equity	(1,308)	(1,031)
Total liabilities and stockholders' equity	$ 984	$ 1,218

XML

Equipment Installment Plan Receivables (Narrative) (Details) (USD $) In Millions, unless otherwise specified	9 Months Ended
	Sep. 30, 2013	Sep. 30, 2013 Accounts Receivable, Net [Member]	Dec. 31, 2012 Accounts Receivable, Net [Member]	Sep. 30, 2013 Other Assets [Member]	Dec. 31, 2012 Other Assets [Member]
Receivables [Abstract]
Equipment installment plan, maximum payment term	24 months
Accounts, Notes, Loans and Financing Receivable [Line Items]
Equipment installment plan receivables		$ 1,100	$ 475	$ 750	$ 216

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Additional Financial Information (Restructuring Costs) (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Restructuring Reserve [Roll Forward]
Balance, beginning of period			$ 32
Restructuring costs	0	36	54	90
Cash payments			(62)
Balance, end of period	24		24
2013 Restructuring Program [Member]
Restructuring Reserve [Roll Forward]
Balance, beginning of period			0
Restructuring costs			54
Cash payments			(53)
Balance, end of period	1		1
2012 Restructuring Program [Member]
Restructuring Reserve [Roll Forward]
Balance, beginning of period			32
Restructuring costs		36	0	90
Cash payments			(9)
Balance, end of period	$ 23		$ 23

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Property and Equipment (Tables)

9 Months Ended

Sep. 30, 2013

Property, Plant and Equipment [Abstract]

Schedule of Property and Equipment

The components of property and equipment were as follows:

(in millions)	Useful Lives	September 30, 2013			December 31, 2012
Buildings and improvements	Up to 40 years	$	695		$	676
Wireless communications systems	2 - 20 years	23,908			21,147
Capitalized software	2 - 7 years	6,198			5,078
Equipment and furniture	2 - 5 years	2,286			1,991
Construction in progress		1,603			1,659
Accumulated depreciation and amortization		(19,320		)	(17,744		)
Property and equipment, net		$	15,370		$	12,807

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Condensed Consolidated Statements of Cash Flows (Unaudited) (USD $) In Millions, unless otherwise specified	9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012
Operating activities
Net cash provided by operating activities	$ 2,541	$ 2,707
Investing activities
Purchases of property and equipment	(3,143)	(2,003)
Purchases of intangible assets	(52)	(379)
Short term affiliate loan receivable, net	300	(297)
Cash and cash equivalents acquired in MetroPCS business combination	2,144	0
Change in restricted cash equivalents	(100)	0
Investments in unconsolidated affiliates, net	(22)	16
Other, net	5	(4)
Net cash used in investing activities	(868)	(2,667)
Financing activities
Proceeds from issuance of long-term debt	498	0
Repayments of short-term debt for purchases of property and equipment	(194)	0
Repayments related to a variable interest entity	(80)	0
Distribution to affiliate as a result of debt recapitalization	(41)	0
Proceeds from exercise of stock options	116	0
Excess tax benefit from stock-based compensation	4	0
Other, net	(5)	0
Net cash provided by financing activities	298	0
Change in cash and cash equivalents	1,971	40
Cash and cash equivalents
Beginning of period	394	390
End of period	$ 2,365	$ 430

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Consolidation and Basis of Presentation

9 Months Ended

Sep. 30, 2013

Organization, Consolidation and Presentation of Financial Statements [Abstract]

Summary of Significant Accounting Policies

Note 1 – Consolidation and Basis of Presentation

The accompanying unaudited condensed consolidated financial statements include the balances and results of operations of T-Mobile US, Inc. and its consolidated subsidiaries, collectively “T-Mobile” or the “Company”. T-Mobile consolidates all majority-owned subsidiaries over which it exercises control, as well as variable interest entities where it is deemed to be the primary beneficiary and variable interest entities which cannot be deconsolidated. Intercompany transactions and balances have been eliminated in consolidation.

The condensed consolidated financial statements fairly present the financial position and results of operations in accordance with accounting principles generally accepted in the United States of America (“GAAP”) and, in the opinion of management, reflect all adjustments of a normal recurring nature necessary for a fair presentation of the Company’s results for the periods presented. The condensed consolidated financial statements are unaudited and should be read in conjunction with the audited Consolidated Financial Statements for the three years ended December 31, 2012, included in the Current Report on Form 8-K filed on June 18, 2013.

The preparation of financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the amounts reported in the financial statements and accompanying notes, including estimates of probable losses and expenses. Actual results could differ from those estimates.

On April 30, 2013, the business combination involving T-Mobile USA, Inc. (“T-Mobile USA”) and MetroPCS Communications, Inc. (“MetroPCS”) was completed. In connection with the business combination, MetroPCS acquired all of the outstanding capital stock of T-Mobile USA beneficially owned by Deutsche Telekom AG (“Deutsche Telekom”) in consideration for the issuance of shares of common stock representing approximately 74% of the fully diluted shares of the combined entity. MetroPCS was subsequently renamed T-Mobile US, Inc. and is the consolidated parent of the Company’s subsidiaries, including T-Mobile USA. The business combination was accounted for as a reverse acquisition with T-Mobile USA as the accounting acquirer. Accordingly, T-Mobile USA’s historical financial statements became the historical financial statements of the combined company. The common shares outstanding and earnings (loss) per share presented for periods up to April 30, 2013 reflect the common shares issued to T-Mobile Global Holding GmbH (“T-Mobile Holding”), an indirect wholly-owned subsidiary of Deutsche Telekom, in connection with the reverse acquisition. SeeNote 2 – Transaction with MetroPCS for further information.

Segments

T-Mobile operates as a single operating segment and a single reporting unit. As of September 30, 2013 and December 31, 2012, and for the three and nine months endedSeptember 30, 2013 and 2012, all of T-Mobile’s long-lived assets and revenues related to operations in the United States, Puerto Rico and the U.S. Virgin Islands.

Cash and Cash Equivalents

Cash equivalents, including those acquired through the business combination with MetroPCS, consist of highly liquid interest-earning investments with remaining maturities of three months or less at the date of purchase. Cash equivalents are stated at cost, which approximates fair value.

T-Mobile is required to restrict cash equivalents as collateral for certain agreements. Cash equivalents with use restrictions of less than twelve months are classified as current. Restricted cash equivalents included in other current assets were $100 million as of September 30, 2013. There were no restricted cash equivalents as of December 31, 2012.

Goodwill

Goodwill consists of the excess of the purchase price over the fair value of net identifiable assets acquired in a business combination. The Company assesses the carrying value of its goodwill for potential impairment annually as of December 31 or more frequently if events or changes in circumstances indicate that such assets might be impaired. 

Other Intangible Assets

Intangible assets that have finite useful lives are amortized over their useful lives. Customer lists are primarily amortized using the sum-of-the-years-digits method over the expected period in which the relationship is expected to contribute to future cash flows. The remaining finite-lived intangible assets are generally amortized using the straight-line method.

Guarantee Liabilities

T-Mobile offers a handset upgrade program that provides eligible customers a specified-price trade-in right to upgrade their handset, up to twice a year following completion of an initial six-month enrollment period. Participating customers must finance their handset using an equipment installment plan (“EIP”). Upon upgrading, the customer will receive a credit in the amount of the outstanding EIP balance provided they trade in their used handset to purchase a new handset from T-Mobile.

For customers who enroll in the trade-in programs, the Company defers the portion of equipment sales revenue which represents the estimated value of the specified-price trade-in right guarantee. The guarantee liabilities are valued based on various economic and customer behavioral assumptions, including the customer's estimated remaining EIP balance at trade-in, the expected fair value of the used handset at trade-in, and the trade-in probability for each month over the term of the EIP. The guarantee is recognized as equipment sales when the customer upgrades their handset or T-Mobile is otherwise relieved of its performance obligation. Guarantee liabilities included in other current liabilities were $90 million as of September 30, 2013. There were no guarantee liabilities as of December 31, 2012 as the program was introduced in the third quarter of 2013.

Stock-Based Compensation

Stock-based compensation cost for stock awards, which include restricted stock units (“RSUs”) and performance stock units (“PSUs”), is measured at fair value on the grant date and recognized as expense, net of expected forfeitures, over the related service period. The fair value of stock awards is based on the closing price of T-Mobile common stock on the date of grant. RSUs are recognized as expense using the straight-line method. PSUs are recognized as expense following a graded vesting schedule.

Earnings (Loss) Per Share

Basic earnings (loss) per share is computed based on the weighted-average number of common shares outstanding for the period. Diluted earnings (loss) per share is computed based on the weighted-average number of common shares outstanding for the period plus the effect of dilutive potential common shares outstanding during the period, calculated using the treasury stock method. Dilutive potential common shares consist of outstanding stock options, RSU and PSU awards.

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Property and Equipment

9 Months Ended

Sep. 30, 2013

Property, Plant and Equipment [Abstract]

Property and Equipment

Note 4 – Property and Equipment

The components of property and equipment were as follows:

(in millions)	Useful Lives	September 30, 2013			December 31, 2012
Buildings and improvements	Up to 40 years	$	695		$	676
Wireless communications systems	2 - 20 years	23,908			21,147
Capitalized software	2 - 7 years	6,198			5,078
Equipment and furniture	2 - 5 years	2,286			1,991
Construction in progress		1,603			1,659
Accumulated depreciation and amortization		(19,320		)	(17,744		)
Property and equipment, net		$	15,370		$	12,807

Buildings and improvements, wireless communication systems, capitalized software, equipment and furniture, including assets with retirement obligations, and construction-in-progress include $14 million, $960 million, $162 million, $268 million, and $71 million, respectively, based on preliminary fair values, acquired through the business combination with MetroPCS. See Note 2 – Transaction with MetroPCS for further information.

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Transaction with MetroPCS

9 Months Ended

Sep. 30, 2013

Business Combinations [Abstract]

Transaction with MetroPCS

Note 2 – Transaction with MetroPCS

Transaction Overview

On October 3, 2012, Deutsche Telekom, T-Mobile Global Zwischenholding GmbH, a direct wholly-owned subsidiary of Deutsche Telekom (“T-Mobile Global”), T-Mobile Holding, a direct wholly-owned subsidiary of T-Mobile Global, T-Mobile USA and MetroPCS entered into a Business Combination Agreement (“BCA”) for the business combination of T-Mobile USA and MetroPCS, which was subsequently amended on April 14, 2013. The business combination was intended to provide the Company with expanded scale, spectrum, and financial resources to compete aggressively with other larger U.S. wireless carriers. The stockholders of MetroPCS approved the business combination on April 24, 2013, and the transaction closed on April 30, 2013 (“Acquisition Date”).

The transaction was accounted for as a reverse acquisition under the acquisition method of accounting with T-Mobile USA considered to be the accounting acquirer based upon the terms and conditions set forth in the BCA, including the ability of T-Mobile USA’s stockholder, Deutsche Telekom, to nominate a majority of the board of directors of the Company and Deutsche Telekom’s receipt of shares representing a majority of the outstanding voting power of the Company. Based on the determination that T-Mobile USA was the accounting acquirer in the transaction, the Company has allocated the preliminary purchase price to the fair value of MetroPCS’s assets and liabilities as of the Acquisition Date, with the excess preliminary purchase price recorded as goodwill.

Accordingly, the acquired assets and liabilities of MetroPCS are included in the Company’s condensed consolidated balance sheets as of September 30, 2013 and the results of its operations and cash flows are included in the Company’s condensed consolidated statements of comprehensive income (loss) and cash flows for the period from May 1, 2013 through September 30, 2013.

Pursuant to the terms and the conditions as set forth in the BCA:

• Deutsche Telekom recapitalized T-Mobile USA by retiring T-Mobile USA’s notes payable to affiliates principal balance of $14.5 billion and all related derivative instruments in exchange for $11.2 billion in new notes payable to affiliates and additional paid-in capital prior to the closing of the business combination.

• Deutsche Telekom provided T-Mobile USA with a $500 million unsecured revolving credit facility.

• MetroPCS effected a recapitalization which consisted of a reverse stock split of the MetroPCS common stock and an aggregate cash payment of $1.5 billion to the MetroPCS stockholders on the Acquisition Date.

• Thereafter, MetroPCS acquired all of T-Mobile USA’s capital stock from T-Mobile Holding in exchange for common stock representing approximately 74% of the fully diluted shares of the combined entity’s common stock on the Acquisition Date.

Debt Recapitalization

In connection with the recapitalization of T-Mobile USA, certain outstanding balances with Deutsche Telekom were settled prior to the closing of the business combination. The debt recapitalization was accounted for as a debt extinguishment with the effects being treated as a capital transaction. The effects on additional paid-in capital as a result of the debt recapitalization are presented in the following table:

(in millions)	Debt Recapitalization
Retirement of notes payable to affiliates	$	14,450
Elimination of net unamortized discounts and premiums on notes payable to affiliates	434
Issuance of new notes payable to affiliates	(11,200		)
Settlement of accounts receivable from affiliates and other outstanding balances	(363		)
Income tax effect	(178		)
Total	$	3,143

Reverse Stock Split

On April 30, 2013, as contemplated by the BCA, the Company amended and restated its existing certificate of incorporation in its entirety in the form of the Fourth Amended and Restated Certificate of Incorporation to, among other things, effect a reverse stock split of MetroPCS’ common stock, and change its name to T-Mobile US, Inc. On the Acquisition Date, the Company issued to T-Mobile Holding 535,286,077 shares of common stock in exchange for T-Mobile Holding transferring to the Company all of its rights, title and interest in and to all the equity interests of T-Mobile USA. After giving effect to this transaction, the shares of the Company’s common stock issued to T-Mobile Holding represented approximately 74% of the fully diluted shares of the Company’s common stock on the Acquisition Date. Immediately prior to the Acquisition Date, each issued share of MetroPCS was reverse split, and at consummation of the business combination each issued share was canceled and converted into shares of the Company’s stock totaling 184,487,309 shares of common stock, exclusive of 1,382,505 shares in treasury.

Consideration Transferred

The fair value of the consideration transferred in a reverse acquisition was determined based on the number of shares the accounting acquirer (T-Mobile USA, the legal acquiree) would have had to issue to the stockholders of the accounting acquiree (MetroPCS, the legal acquirer) in order to provide the same ratio of ownership in the combined entity (approximately 26%) as a result of the transaction. The fair value of the consideration transferred was based on the most reliable measure, which was determined to be the market price of MetroPCS shares as of the Acquisition Date.  

The fair value of the consideration transferred, based on the market price of MetroPCS shares on the Acquisition Date, consisted of the following:

(in millions)	Purchase Consideration
Fair value of MetroPCS shares	$	2,886
Fair value of MetroPCS stock options	84
Cash consideration paid to MetroPCS stock option holders	1
Total purchase consideration	$	2,971

The fair value of the MetroPCS shares was determined by using the closing price of MetroPCS common stock on the New York Stock Exchange on the Acquisition Date, prior to giving effect to the reverse stock split, of $11.84 per share, adjusted by the $4.05 per share impact of the $1.5 billion cash payment, which was a return of capital to the MetroPCS stockholders made as part of the recapitalization prior to the stock issuance to T-Mobile Holding. This resulted in an adjusted price of $7.79 per share unadjusted for the effects of the reverse stock split.

Pursuant to the BCA, unvested MetroPCS stock options and shares of restricted stock immediately vested as of the closing of the business combination and were adjusted to give effect to the recapitalization. Holders of stock options for which the exercise price was less than the average closing price of MetroPCS’s common stock for the five days preceding the closing (“in-the-money options”) had the right to receive, at their election, a cash payment based on the amount by which the average closing price exceeded the exercise price of the options. In-the-money options held by holders who made this election were canceled. Finally, stock options with low exercise prices, as defined in the BCA, were canceled in exchange for cash consideration.

Purchase Price Allocation

As T-Mobile USA was the accounting acquirer in the business combination, it has allocated the preliminary purchase price to the MetroPCS individually identifiable assets acquired and liabilities assumed based on their estimated fair values on the Acquisition Date. The excess of the preliminary purchase price over those fair values was recorded as goodwill. The determination of the preliminary fair values of the acquired assets and assumed liabilities requires significant judgment, including estimates relating to the decommissioning of network cell sites, the determination of estimated lives of depreciable and intangible assets and the calculation of the value of spectrum licenses, customer lists, and trademarks. Accordingly, should additional information become available, the preliminary purchase price allocation is subject to further adjustment.

The following table summarizes the allocation of the preliminary purchase price:

(in millions)	Preliminary Fair Value
Assets
Cash and cash equivalents	$	2,144
Accounts receivable, net	98
Inventory	171
Other current assets	240
Property and equipment	1,475
Spectrum licenses	3,818
Other intangible assets	1,376
Other assets	10
Total assets acquired	9,332
Liabilities and Stockholders’ Equity
Accounts payable and accrued liabilities	475
Deferred revenues	187
Other current liabilities	15
Deferred tax liabilities	735
Long-term debt	6,277
Other long-term liabilities	355
Total liabilities assumed	8,044
Net identifiable assets acquired	1,288
Goodwill	1,683
Net assets acquired	$	2,971

The goodwill recognized was attributable primarily to expected synergies from combining the businesses of T-Mobile USA and MetroPCS, including, but not limited to, the following:

• Expected cost synergies from reduced network-related expenses through the elimination of redundant assets.

• Enhanced spectrum position which will provide greater network coverage and improved 4G LTE coverage in key markets across the country and the ability to offer a wider array of products, plans and services to the Company’s customers.

None of the goodwill is deductible for income tax purposes.

The Company recognized transaction and integration costs of $12 million and $51 million for the three and nine months endedSeptember 30, 2013, respectively. This includes personnel-related change in control, transaction and other acquisition-related charges.  These costs are included in MetroPCS transaction and integration costs in the condensed consolidated statements of comprehensive income (loss).

Condensed Consolidated Statements of Comprehensive Income (Loss) for MetroPCS Operations

The following supplemental information presents the financial results of MetroPCS operations included in the condensed consolidated statements of comprehensive income (loss) since May 1, 2013 for the three and nine months endedSeptember 30, 2013:

(in millions)	Three Months Ended September 30, 2013		Nine Months Ended September 30, 2013
Total revenues	$	1,273	$	2,072
Income before income taxes	87		103

Pro Forma Financial Information

The following pro forma consolidated results of net income for the nine months endedSeptember 30, 2013 and 2012 assume the business combination was completed as of January 1, 2012, respectively:

	Nine Months Ended September 30,
(in millions, except per share amounts)	2013		2012
Pro forma revenues	$	19,331	$	18,720
Pro forma net income (loss)	57		(7,283		)
Pro forma basic earnings (loss) per share	$	0.08	$	(10.13	)
Pro forma diluted earnings (loss) per share	0.08		(10.13		)

The pro forma amounts include the historical operating results of T-Mobile USA and MetroPCS prior to the business combination, with adjustments directly attributable to the business combination relating to purchase accounting adjustments to conform to accounting policies that affect total revenues, total operating expenses, interest expense, other income (expense), income taxes expense, and eliminate intercompany activities.

As the pro forma amounts assumed the business combination was completed as of January 1, 2012, pro forma earnings for the nine months endedSeptember 30, 2013 excluded $205 million of transaction and integration costs and these costs were included in the pro forma earnings for the nine months endedSeptember 30, 2012.

The pro forma results include the following:

• Increase in tax expenses based on the inclusion of MetroPCS in the combined company of $54 million for the nine months endedSeptember 30, 2013 and a decrease of $194 million for the nine months endedSeptember 30, 2012;

• Net decrease to amortization and depreciation expense related to the fair value of the intangible assets and fixed assets acquired of $3 million for the nine months endedSeptember 30, 2013 and a net increase of $137 million for the nine months endedSeptember 30, 2012, respectively; and

• The impact of financing agreements entered into whereby an aggregate of $14.7 billion senior unsecured notes were issued and $14.5 billion of senior unsecured notes previously issued by T-Mobile USA to Deutsche Telekom and $2.5 billion of senior unsecured notes previously issued by MetroPCS were retired in connection with the business combination for a net increase to interest and other income (expense) of $91 million and $107 million for the nine months endedSeptember 30, 2013 and 2012, respectively.

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Transaction with MetroPCS (Condensed Consolidated Statements of Comprehensive Income (Loss) for MetroPCS Operations) (Details) (MetroPCS [Member], USD $) In Millions, unless otherwise specified	3 Months Ended	5 Months Ended
	Sep. 30, 2013	Sep. 30, 2013
MetroPCS [Member]
Business Acquisition [Line Items]
Total revenues	$ 1,273	$ 2,072
Income before income taxes	$ 87	$ 103

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Notes Payable to Affiliates and Debt (Tables)

9 Months Ended

Sep. 30, 2013

Debt Disclosure [Abstract]

Schedule of Long-term Debt

Long-term debt as of September 30, 2013 was as follows:

(in millions)	September 30, 2013
5.250% Senior Notes due 2018	$	500
7.875% Senior Notes due 2018	1,000
6.625% Senior Notes due 2020	1,000
6.250% Senior Notes due 2021	1,750
6.625% Senior Notes due 2023	1,750
Unamortized premium from purchase price allocation fair value adjustment	422
Capital leases	356
Total debt	6,778
Less: Current portion of capital leases	17
Long-term debt	$	6,761

Notes payable to affiliates as of September 30, 2013 were as follows:

(in millions)	September 30, 2013
6.464% Senior Notes due 2019	$	1,250
5.578% Senior Reset Notes due 2019 (reset date in April 2015 )	1,250
6.542% Senior Notes due 2020	1,250
5.656% Senior Reset Notes due 2020 (reset date in April 2015)	1,250
6.633% Senior Notes due 2021	1,250
5.747% Senior Reset Notes due 2021 (reset date in October 2015)	1,250
6.731% Senior Notes due 2022	1,250
5.845% Senior Reset Notes due 2022 (reset date in October 2015)	1,250
6.836% Senior Notes due 2023	600
5.950% Senior Reset Notes due 2023 (reset date in April 2016)	600
Total notes payables to affiliates	$	11,200

Notes payable to affiliates as of December 31, 2012 were as follows:

(in millions)	December 31, 2012
Notes payable to affiliates, due 2013 (1.772% - 7.099%)	$	1,273
Notes payable to affiliates, due 2014 (2.696% - 3.532%)	2,348
Notes payable to affiliates, due 2015 (2.843%)	1,905
Notes payable to affiliates, due 2016 (2.739%)	1,000
Notes payable to affiliates, thereafter (3.652% - 8.195%)	7,956
Unamortized discount and premium, net	463
Total notes payable to affiliates	14,945
Less: Current portion of long-term notes payable to affiliates	1,290
Long-term payables to affiliates	$	13,655

Schedule of Carrying Values and Fair Values of Notes Payable

The carrying amounts and fair values of the Company’s notes payable to affiliates and long-term debt were as follows:

	September 30, 2013				December 31, 2012
(in millions)	Carrying Amount		Fair Value		Carrying Amount		Fair Value
Variable-rate notes payable to affiliates	$	5,600	$	5,480	$	—	$	—
Fixed-rate notes payable to affiliates	5,600		5,601		14,945		14,721
Long-term debt principal, excluding capital leases	6,000		6,142		—		—

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Guarantor Financial Information (Tables)

9 Months Ended

Sep. 30, 2013

Condensed Financial Information of Parent Company Only Disclosure [Abstract]

Schedule of Condensed Consolidating Balance Sheet Information

Condensed Consolidating Balance Sheet Information

As of September 30, 2013

(in millions)	Parent		Issuer		Guarantor Subsidiaries		Non-Guarantor Subsidiaries			Consolidating and Eliminating Adjustments			Consolidated
Assets
Current assets
Cash and cash equivalents	$	1,157	$	984	$	89	$	135		$	—		$	2,365
Accounts receivable, net of allowances for uncollectible accounts	—		—		3,256		114			—			3,370
Accounts receivable from affiliates	—		—		19		—			—			19
Inventory	—		—		761		—			—			761
Current portion of deferred tax assets, net	—		—		758		15			—			773
Other current assets	—		4		666		6			—			676
Total current assets	1,157		988		5,549		270			—			7,964
Property and equipment, net of accumulated depreciation	—		—		14,754		616			—			15,370
Goodwill	—		—		1,683		—			—			1,683
Spectrum licenses	—		—		18,414		—			—			18,414
Other intangible assets, net of accumulated amortization	—		—		1,297		—			—			1,297
Investments in unconsolidated affiliates	—		15		40		—			—			55
Investments in subsidiaries, net	9,328		25,455		—		—			(34,783		)	—
Intercompany receivables	1,927		1,073		—		19			(3,019		)	—
Long-term investments	3		—		33		—			—			36
Other assets	—		4		894		79			(29		)	948
Total assets	$	12,415	$	27,535	$	42,664	$	984		$	(37,831	)	$	45,767
Liabilities and Stockholders' Equity
Current liabilities
Accounts payable and accrued liabilities	$	—	$	189	$	4,007	$	128		$	—		$	4,324
Current payables to affiliates	—		201		104		—			—			305
Short-term debt	—		178		17		—			—			195
Deferred revenue	—		—		447		—			—			447
Other current liabilities	—		—		203		40			—			243
Total current liabilities	—		568		4,778		168			—			5,514
Long-term payables to affiliates	—		11,200		—		—			—			11,200
Long-term debt	—		6,424		337		—			—			6,761
Long-term financial obligation	—		—		364		2,124			—			2,488
Deferred tax liabilities	—		—		4,724		—			(29		)	4,695
Deferred rents	—		—		2,062		—			—			2,062
Negative carrying value of subsidiaries, net	—		—		767		—			(767		)	—
Intercompany payables	—		—		3,019		—			(3,019		)	—
Other long-term liabilities	—		15		617		—			—			632
Total long-term liabilities	—		17,639		11,890		2,124			(3,815		)	27,838
Total stockholders' equity	12,415		9,328		25,996		(1,308		)	(34,016		)	12,415
Total liabilities and stockholders' equity	$	12,415	$	27,535	$	42,664	$	984		$	(37,831	)	$	45,767

Condensed Consolidating Balance Sheet Information

As of December 31, 2012

(in millions)	Parent		Issuer		Guarantor Subsidiaries		Non-Guarantor Subsidiaries			Consolidating and Eliminating Adjustments			Consolidated
Assets
Current assets
Cash and cash equivalents	$	—	$	—	$	287	$	107		$	—		$	394
Accounts receivable, net of allowances for uncollectible accounts	—		—		2,607		71			—			2,678
Accounts receivable from affiliates	—		—		682		—			—			682
Inventory	—		—		457		—			—			457
Current portion of deferred tax assets, net	—		—		640		15			—			655
Other current assets	—		106		565		4			—			675
Total current assets	—		106		5,238		197			—			5,541
Property and equipment, net of accumulated depreciation	—		—		12,129		678			—			12,807
Spectrum licenses	—		—		14,330		220			—			14,550
Other intangible assets, net of accumulated amortization	—		—		79		—			—			79
Investments in unconsolidated affiliates	—		19		44		—			—			63
Investments in subsidiaries, net	—		24,823		—		—			(24,823		)	—
Intercompany receivables	—		—		3,760		71			(3,831		)	—
Long-term investments	—		—		31		—			—			31
Other assets	—		147		352		52			—			551
Total assets	$	—	$	25,095	$	35,963	$	1,218		$	(28,654	)	$	33,622
Liabilities and Stockholder’s Equity
Current liabilities
Accounts payable and accrued liabilities	$	—	$	—	$	3,382	$	93		$	—		$	3,475
Current payables to affiliates	—		1,494		125		—			—			1,619
Deferred revenue	—		—		290		—			—			290
Other current liabilities	—		—		168		40			—			208
Total current liabilities	—		1,494		3,965		133			—			5,592
Long-term payables to affiliates	—		13,655		—		—			—			13,655
Long-term financial obligation	—		—		360		2,101			—			2,461
Deferred tax liabilities	—		—		3,603		15			—			3,618
Deferred rents	—		—		1,884		—			—			1,884
Negative carrying value of subsidiaries, net	—		—		489		—			(489		)	—
Intercompany payables	—		3,831		—		—			(3,831		)	—
Other long-term liabilities	—		—		297		—			—			297
Total long-term liabilities	—		17,486		6,633		2,116			(4,320		)	21,915
Total stockholder’s equity	—		6,115		25,365		(1,031		)	(24,334		)	6,115
Total liabilities and stockholder’s equity	$	—	$	25,095	$	35,963	$	1,218		$	(28,654	)	$	33,622

Schedule of Condensed Consolidating Statement of Comprehensive Income (Loss) Information

Condensed Consolidating Statement of Comprehensive Income (Loss) Information

Three Months EndedSeptember 30, 2013

(in millions)	Parent			Issuer			Guarantor Subsidiaries			Non-Guarantor Subsidiaries			Consolidating and Eliminating Adjustments			Consolidated
Revenues
Service revenues	$	—		$	—		$	4,958		$	219		$	(39	)	$	5,138
Equipment sales	—			—			1,643			—			(176		)	1,467
Other revenues	—			—			59			30			(6		)	83
Total revenues	—			—			6,660			249			(221		)	6,688
Operating expenses
Network costs	—			—			1,443			6			(5		)	1,444
Cost of equipment sales	—			—			2,052			155			(192		)	2,015
Customer acquisition	—			—			1,039			—			—			1,039
General and administrative	—			—			871			47			(24		)	894
Depreciation and amortization	—			—			966			21			—			987
MetroPCS transaction and integration costs	—			—			12			—			—			12
Total operating expenses	—			—			6,383			229			(221		)	6,391
Operating income	—			—			277			20			—			297
Other income (expense)
Interest expense to affiliates	—			(183		)	—			—			—			(183		)
Interest expense	—			(84		)	(24		)	(43		)	—			(151		)
Interest income	—			—			50			—			—			50
Other income (expense), net	—			(9		)	2			—			—			(7		)
Total other income (expense), net	—			(276		)	28			(43		)	—			(291		)
Income (loss) before income taxes	—			(276		)	305			(23		)	—			6
Income tax expense (benefit)	—			—			49			(7		)	—			42
Earnings (loss) of subsidiaries	(36		)	240			(13		)	—			(191		)	—
Net income (loss)	(36		)	(36		)	243			(16		)	(191		)	(36		)
Other comprehensive income (loss), net of tax	—			—			—			—			—			—
Total comprehensive income (loss)	$	(36	)	$	(36	)	$	243		$	(16	)	$	(191	)	$	(36	)

Condensed Consolidating Statement of Comprehensive Income (Loss) Information

Three Months EndedSeptember 30, 2012

(in millions)	Parent		Issuer			Guarantor Subsidiaries			Non-Guarantor Subsidiaries		Consolidating and Eliminating Adjustments			Consolidated
Revenues
Service revenues	$	—	$	—		$	4,111		$	178	$	(28	)	$	4,261
Equipment sales	—		—			698			—		(144		)	554
Other revenues	—		—			95			17		(34		)	78
Total revenues	—		—			4,904			195		(206		)	4,893
Operating expenses
Network costs	—		—			1,158			17		(34		)	1,141
Cost of equipment sales	—		—			904			123		(161		)	866
Customer acquisition	—		—			823			—		—			823
General and administrative	—		—			817			34		(11		)	840
Depreciation and amortization	—		—			825			—		—			825
Impairment charges	—		—			8,134			—		—			8,134
Restructuring costs	—		—			36			—		—			36
Other, net	—		—			(179		)	—		—			(179		)
Total operating expenses	—		—			12,518			174		(206		)	12,486
Operating income (loss)	—		—			(7,614		)	21		—			(7,593		)
Other income (expense)
Interest expense to affiliates	—		(155		)	(10		)	—		—			(165		)
Interest income	—		—			20			—		—			20
Other income, net	—		9			6			—		—			15
Total other income (expense), net	—		(146		)	16			—		—			(130		)
Income (loss) before income taxes	—		(146		)	(7,598		)	21		—			(7,723		)
Income tax expense	—		—			6			6		—			12
Loss of subsidiaries	—		(7,589		)	—			—		7,589			—
Net income (loss)	—		(7,735		)	(7,604		)	15		7,589			(7,735		)
Other comprehensive income (loss), net of tax	—		24			(14		)	—		14			24
Total comprehensive income (loss)	$	—	$	(7,711	)	$	(7,618	)	$	15	$	7,603		$	(7,711	)

Condensed Consolidating Statement of Comprehensive Income (Loss) Information

Nine Months EndedSeptember 30, 2013

(in millions)	Parent			Issuer			Guarantor Subsidiaries			Non-Guarantor Subsidiaries			Consolidating and Eliminating Adjustments			Consolidated
Revenues
Service revenues	$	—		$	—		$	13,404		$	586		$	(91	)	$	13,899
Equipment sales	—			—			3,952			—			(500		)	3,452
Other revenues	—			—			200			116			(74		)	242
Total revenues	—			—			17,556			702			(665		)	17,593
Operating expenses
Network costs	—			—			3,907			46			(73		)	3,880
Cost of equipment sales	—			—			4,978			406			(547		)	4,837
Customer acquisition	—			—			2,804			—			—			2,804
General and administrative	—			—			2,409			118			(45		)	2,482
Depreciation and amortization	—			—			2,568			62			—			2,630
MetroPCS transaction and integration costs	—			—			51			—			—			51
Restructuring costs	—			—			54			—			—			54
Other, net	—			—			(2		)	—			—			(2		)
Total operating expenses	—			—			16,769			632			(665		)	16,736
Operating income	—			—			787			70			—			857
Other income (expense)
Interest expense to affiliates	—			(586		)	—			—			—			(586		)
Interest expense	—			(138		)	(44		)	(129		)	—			(311		)
Interest income	—			—			125			—			—			125
Other income, net	—			105			—			—			—			105
Total other income (expense), net	—			(619		)	81			(129		)	—			(667		)
Income (loss) before income taxes	—			(619		)	868			(59		)	—			190
Income tax expense (benefit)	—			—			158			(23		)	—			135
Earnings (loss) of subsidiaries	(83		)	674			(42		)	—			(549		)	—
Net income (loss)	(83		)	55			668			(36		)	(549		)	55
Other comprehensive income (loss), net of tax	—			(39		)	24			—			(24		)	(39		)
Total comprehensive income (loss)	$	(83	)	$	16		$	692		$	(36	)	$	(573	)	$	16

Condensed Consolidating Statement of Comprehensive Income (Loss) Information

Nine Months EndedSeptember 30, 2012

(in millions)	Parent		Issuer			Guarantor Subsidiaries			Non-Guarantor Subsidiaries		Consolidating and Eliminating Adjustments			Consolidated
Revenues
Service revenues	$	—	$	—		$	12,631		$	535	$	(80	)	$	13,086
Equipment sales	—		—			1,933			—		(409		)	1,524
Other revenues	—		—			253			52		(105		)	200
Total revenues	—		—			14,817			587		(594		)	14,810
Operating expenses
Network costs	—		—			3,568			52		(105		)	3,515
Cost of equipment sales	—		—			2,570			342		(456		)	2,456
Customer acquisition	—		—			2,323			—		—			2,323
General and administrative	—		—			2,600			114		(33		)	2,681
Depreciation and amortization	—		—			2,391			—		—			2,391
Impairment charges	—		—			8,134			—		—			8,134
Restructuring costs	—		—			90			—		—			90
Other, net	—		—			(136		)	—		—			(136		)
Total operating expenses	—		—			21,540			508		(594		)	21,454
Operating income (loss)	—		—			(6,723		)	79		—			(6,644		)
Other income (expense)
Interest expense to affiliates	—		(475		)	(12		)	—		—			(487		)
Interest income	—		—			53			—		—			53
Other income, net	—		16			6			—		—			22
Total other income (expense), net	—		(459		)	47			—		—			(412		)
Income (loss) before income taxes	—		(459		)	(6,676		)	79		—			(7,056		)
Income tax expense	—		—			244			28		—			272
Loss of subsidiaries	—		(6,869		)	—			—		6,869			—
Net income (loss)	—		(7,328		)	(6,920		)	51		6,869			(7,328		)
Other comprehensive income (loss), net of tax	—		19			(12		)	—		12			19
Total comprehensive income (loss)	$	—	$	(7,309	)	$	(6,932	)	$	51	$	6,881		$	(7,309	)

Schedule of Condensed Consolidating Statement of Cash Flows Information

Condensed Consolidating Statement of Cash Flows Information

Nine Months EndedSeptember 30, 2013

(in millions)	Parent		Issuer			Guarantor Subsidiaries			Non-Guarantor Subsidiaries		Consolidating and Eliminating Adjustments		Consolidated
Operating activities
Net cash provided by (used in) operating activities	$	304	$	(921	)	$	3,130		$	28	$	—	$	2,541
Investing activities
Purchases of property and equipment	—		—			(3,143		)	—		—		(3,143		)
Purchases of intangible assets	—		—			(52		)	—		—		(52		)
Short term affiliate loan receivable, net	—		—			300			—		—		300
Cash and cash equivalents acquired in MetroPCS business combination	737		1,407			—			—		—		2,144
Change in restricted cash equivalents	—		—			(100		)	—		—		(100		)
Investments in unconsolidated affiliates, net	—		—			(22		)	—		—		(22		)
Other, net	—		—			5			—		—		5
Net cash provided by (used in) investing activities	737		1,407			(3,012		)	—		—		(868		)
Financing activities
Proceeds from issuance of long-term debt	—		498			—			—		—		498
Repayments of short-term debt for purchases of property and equipment	—		—			(194		)	—		—		(194		)
Repayments related to a variable interest entity	—		—			(80		)	—		—		(80		)
Distribution to affiliate as a result of debt recapitalization	—		—			(41		)	—		—		(41		)
Proceeds from exercise of stock options	116		—			—			—		—		116
Excess tax benefit from stock-based compensation	—		—			4			—		—		4
Other, net	—		—			(5		)	—		—		(5		)
Net cash provided by (used in) financing activities	116		498			(316		)	—		—		298
Change in cash and cash equivalents	1,157		984			(198		)	28		—		1,971
Cash and cash equivalents
Beginning of period	—		—			287			107		—		394
End of period	$	1,157	$	984		$	89		$	135	$	—	$	2,365

Condensed Consolidating Statement of Cash Flows Information

Nine Months EndedSeptember 30, 2012

(in millions)	Parent		Issuer		Guarantor Subsidiaries			Non-Guarantor Subsidiaries		Consolidating and Eliminating Adjustments		Consolidated
Operating activities
Net cash provided by operating activities	$	—	$	—	$	2,688		$	19	$	—	$	2,707
Investing activities
Purchases of property and equipment	—		—		(2,003		)	—		—		(2,003		)
Purchases of intangible assets	—		—		(379		)	—		—		(379		)
Short term affiliate loan receivable, net	—		—		(297		)	—		—		(297		)
Investments in unconsolidated affiliates, net	—		—		16			—		—		16
Other, net	—		—		(4		)	—		—		(4		)
Net cash used in investing activities	—		—		(2,667		)	—		—		(2,667		)
Financing activities
Net cash provided by financing activities	—		—		—			—		—		—
Change in cash and cash equivalents	—		—		21			19		—		40
Cash and cash equivalents
Beginning of period	—		—		339			51		—		390
End of period	$	—	$	—	$	360		$	70	$	—	$	430

XML

Subsequent Events (Details) (USD $) In Millions, unless otherwise specified	9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012
Subsequent Event [Line Items]
Indefinite-lived Intangible Assets Acquired	$ 52	$ 379
Subsequent Event
Subsequent Event [Line Items]
Indefinite-lived Intangible Assets Acquired	308
Deutsche Telekom [Member] | Subsequent Event
Subsequent Event [Line Items]
Notes payable to affiliate, principal balance sold to third party creditors	5,600
Senior Notes due 2019 [Member] | Deutsche Telekom [Member] | Subsequent Event
Subsequent Event [Line Items]
Notes payable to affiliate, principal balance sold to third party creditors	1,250
Senior Notes due 2020 [Member] | Deutsche Telekom [Member] | Subsequent Event
Subsequent Event [Line Items]
Notes payable to affiliate, principal balance sold to third party creditors	1,250
Senior Notes due 2021 [Member] | Deutsche Telekom [Member] | Subsequent Event
Subsequent Event [Line Items]
Notes payable to affiliate, principal balance sold to third party creditors	1,250
Senior Notes due 2022 [Member] | Deutsche Telekom [Member] | Subsequent Event
Subsequent Event [Line Items]
Notes payable to affiliate, principal balance sold to third party creditors	1,250
Senior Notes due 2023 [Member] | Deutsche Telekom [Member] | Subsequent Event
Subsequent Event [Line Items]
Notes payable to affiliate, principal balance sold to third party creditors	$ 600

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Transaction with MetroPCS (Debt Recapitalization) (Details) (USD $) In Millions, unless otherwise specified	9 Months Ended	0 Months Ended
	Sep. 30, 2013	Apr. 30, 2013 Deutsche Telekom [Member]
Business Acquisition [Line Items]
Retirement of notes payable to affiliates		$ 14,450
Elimination of net unamortized discounts and premiums on notes payable to affiliates		434
Issuance of new notes payable to affiliates		(11,200)
Settlement of accounts receivable from affiliates and other outstanding balances		(363)
Income tax effect		(178)
Total	$ 3,143	$ 3,143

XML

Additional Financial Information (Supplemental Cash Flows) (Details) (USD $) In Millions, unless otherwise specified	9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012
Additional Financial Information [Abstract]
Interest payments	$ 784	$ 644
Income tax payments (refunds), net	21	24
Increase in accounts payable for purchases of property and equipment	53	233
Short-term debt outstanding for financing of property and equipment purchases	178	0
Relinquishment of accounts receivable from affiliates in satisfaction of notes payable to affiliates	0	644
Noncash portion of spectrum license swap transactions	8	1,452
Retirement of notes payable to affiliates	14,450	0
Elimination of net unamortized discounts and premiums on notes payable to affiliates	434	0
Issuance of new notes payable to affiliates	11,200	0
Settlement of accounts receivable from affiliates and other outstanding balances	363	0
Income tax benefit from debt recapitalization	178	0
Net assets acquired in MetroPCS business combination, excluding cash acquired	$ 827	$ 0

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Notes Payable to Affiliates and Debt (Carrying Values and Fair Values of Notes Payable) (Details) (USD $)	Sep. 30, 2013	Dec. 31, 2012
Debt Instrument [Line Items]
Fair Value, Liabilities, Level 2 to Level 1 Transfers, Amount	$ 5,600,000,000
Variable Rate Affiliate Debt [Member] | Carrying Amount [Member]
Debt Instrument [Line Items]
Long-term debt	5,600,000,000	0
Variable Rate Affiliate Debt [Member] | Fair Value [Member]
Debt Instrument [Line Items]
Long-term debt	5,480,000,000	0
Fixed Rate Affiliate Debt [Member] | Carrying Amount [Member]
Debt Instrument [Line Items]
Long-term debt	5,600,000,000	14,945,000,000
Fixed Rate Affiliate Debt [Member] | Fair Value [Member]
Debt Instrument [Line Items]
Long-term debt	5,601,000,000	14,721,000,000
Notes Payable to Third Parties [Member] | Carrying Amount [Member]
Debt Instrument [Line Items]
Long-term debt	6,000,000,000	0
Notes Payable to Third Parties [Member] | Fair Value [Member]
Debt Instrument [Line Items]
Long-term debt	$ 6,142,000,000	$ 0

XML

Fair Value Measurements and Derivative Instruments (Fair Value of Financial Instruments by Level) (Details) (USD $) In Millions, unless otherwise specified	Sep. 30, 2013	Dec. 31, 2012
Long-term Investments [Member]
Assets
Nonqualified deferred compensation	$ 34	$ 31
Long-term Investments [Member] | Level 1 [Member]
Assets
Nonqualified deferred compensation	34	31
Long-term Investments [Member] | Level 2 [Member]
Assets
Nonqualified deferred compensation	0	0
Long-term Investments [Member] | Level 3 [Member]
Assets
Nonqualified deferred compensation	0	0
Other Long-term Liabilities [Member]
Liabilities
Nonqualified deferred compensation	34	31
Other Long-term Liabilities [Member] | Level 1 [Member]
Liabilities
Nonqualified deferred compensation	34	31
Other Long-term Liabilities [Member] | Level 2 [Member]
Liabilities
Nonqualified deferred compensation	0	0
Other Long-term Liabilities [Member] | Level 3 [Member]
Liabilities
Nonqualified deferred compensation	0	0
Designated as Hedging Instrument [Member] | Other Assets [Member]
Assets
Cross currency interest rate swaps		144
Designated as Hedging Instrument [Member] | Other Assets [Member] | Level 1 [Member]
Assets
Cross currency interest rate swaps		0
Designated as Hedging Instrument [Member] | Other Assets [Member] | Level 2 [Member]
Assets
Cross currency interest rate swaps		144
Designated as Hedging Instrument [Member] | Other Assets [Member] | Level 3 [Member]
Assets
Cross currency interest rate swaps		0
Not Designated as Hedging Instrument [Member] | Other Current Assets [Member]
Assets
Interest rate swaps		106
Not Designated as Hedging Instrument [Member] | Other Current Assets [Member] | Level 1 [Member]
Assets
Interest rate swaps		0
Not Designated as Hedging Instrument [Member] | Other Current Assets [Member] | Level 2 [Member]
Assets
Interest rate swaps		106
Not Designated as Hedging Instrument [Member] | Other Current Assets [Member] | Level 3 [Member]
Assets
Interest rate swaps		$ 0

XML

Equipment Installment Plan Receivables (Allowance for Credit Losses) (Details) (USD $) In Millions, unless otherwise specified			9 Months Ended
	Sep. 30, 2013 Deferred Interest On Equipment Installment Receivables [Member]	Dec. 31, 2012 Deferred Interest On Equipment Installment Receivables [Member]	Sep. 30, 2013 Equipment Installment Plan Receivable [Member]
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Allowance, beginning of period	$ 222	$ 110	$ 125
Change in deferred interest on short-term and long-term installment receivables			112
Bad debt expense			118
Write-offs			(79)
Allowance, end of period	$ 222	$ 110	$ 276

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Condensed Consolidated Balance Sheets (Unaudited) (Parenthetical) (USD $) In Millions, except Share data, unless otherwise specified	Sep. 30, 2013	Dec. 31, 2012
Allowance for uncollectible accounts	$ 330	$ 289
Accumulated depreciation	19,320	17,744
Accumulated amortization	$ 404	$ 243
Preferred stock, par value	$ 0.00001	$ 0.00001
Preferred stock, shares authorized	100,000,000	100,000,000
Preferred stock, shares issued	0	0
Preferred stock, shares outstanding	0	0
Common stock, par value	$ 0.00001	$ 0.00001
Common stock, shares authorized	1,000,000,000	1,000,000,000
Common stock, shares issued	729,526,906	535,286,077
Common stock, shares outstanding	728,144,401	535,286,077
Treasury stock, at cost	1,382,505	0

XML

Notes Payable to Affiliates and Debt

9 Months Ended

Sep. 30, 2013

Debt Disclosure [Abstract]

Notes Payable to Affiliates and Debt

Note 7 – Notes Payable to Affiliates and Debt

Notes Payable to Affiliates

Prior to the closing of the business combination with MetroPCS, Deutsche Telekom recapitalized T-Mobile by retiring its notes payable to affiliates principal balance of $14.5 billion in exchange for new senior unsecured notes in an aggregate principal amount of $11.2 billion. Further, in October 2013, Deutsche Telekom sold an aggregate principal amount of $5.6 billion of the senior unsecured notes to third parties. See Note 14 – Subsequent Events for further information.

Notes payable to affiliates as of September 30, 2013 were as follows:

(in millions)	September 30, 2013
6.464% Senior Notes due 2019	$	1,250
5.578% Senior Reset Notes due 2019 (reset date in April 2015 )	1,250
6.542% Senior Notes due 2020	1,250
5.656% Senior Reset Notes due 2020 (reset date in April 2015)	1,250
6.633% Senior Notes due 2021	1,250
5.747% Senior Reset Notes due 2021 (reset date in October 2015)	1,250
6.731% Senior Notes due 2022	1,250
5.845% Senior Reset Notes due 2022 (reset date in October 2015)	1,250
6.836% Senior Notes due 2023	600
5.950% Senior Reset Notes due 2023 (reset date in April 2016)	600
Total notes payables to affiliates	$	11,200

Interest on the Senior Notes and Senior Reset Notes, collectively the notes payable to affiliates, is accrued from the date of issuance at stated interest rates and paid semi-annually. The interest rates on the Senior Reset Notes are adjusted at the reset dates to rates defined in the applicable supplemental indenture. The notes payable to affiliates may be redeemed, in whole, or from time to time in part, subject to the conditions and an early termination fee as set forth in the applicable supplemental indentures.

Notes payable to affiliates as of December 31, 2012 were as follows:

(in millions)	December 31, 2012
Notes payable to affiliates, due 2013 (1.772% - 7.099%)	$	1,273
Notes payable to affiliates, due 2014 (2.696% - 3.532%)	2,348
Notes payable to affiliates, due 2015 (2.843%)	1,905
Notes payable to affiliates, due 2016 (2.739%)	1,000
Notes payable to affiliates, thereafter (3.652% - 8.195%)	7,956
Unamortized discount and premium, net	463
Total notes payable to affiliates	14,945
Less: Current portion of long-term notes payable to affiliates	1,290
Long-term payables to affiliates	$	13,655

The notes payable to affiliates accrued interest from the date of issuance at stated interest rates or LIBOR plus an applicable margin, with accrued interest paid semi-annually, quarterly or monthly. The applicable interest rate on certain notes payable was subject to periodic change based on changes in the credit rating of Deutsche Telekom.

Long-term Debt

In connection with the business combination with MetroPCS, T-Mobile assumed long-term indebtedness of MetroPCS of $6.3 billion, including capital leases in the amount of $333 million. In addition, certain subsidiaries of T-Mobile became guarantors of the assumed senior unsecured notes previously issued by MetroPCS. Further, the Company issued $500 million of long-term debt in August 2013, for which certain subsidiaries are guarantors. See Note 12 – Guarantor Financial Information for the condensed consolidating financial information of T-Mobile’s guarantor subsidiaries.

Long-term debt as of September 30, 2013 was as follows:

(in millions)	September 30, 2013
5.250% Senior Notes due 2018	$	500
7.875% Senior Notes due 2018	1,000
6.625% Senior Notes due 2020	1,000
6.250% Senior Notes due 2021	1,750
6.625% Senior Notes due 2023	1,750
Unamortized premium from purchase price allocation fair value adjustment	422
Capital leases	356
Total debt	6,778
Less: Current portion of capital leases	17
Long-term debt	$	6,761

Interest on the long-term debt, excluding capital leases, is accrued from the date of issuance at stated interest rates and paid semi-annually. The long-term debt, excluding capital leases, may be redeemed, in whole, or from time to time in part, subject to the conditions and an early termination fee as set forth in the applicable supplemental indenture.

Registration Rights Agreements

In connection with the business combination with MetroPCS, T-Mobile and the guarantors assumed the obligations under a Registration Rights Agreement with Deutsche Bank Securities Inc., as representative of the initial purchasers of the 6.250% Senior Notes due 2021 and 6.625% Senior Notes due 2023. In addition, in August 2013, the Company entered into a Registration Rights Agreement with Deutsche Bank Securities Inc. in connection with the issuance of 5.250% Senior Notes due 2018 (together with the 6.250% Senior Notes due 2021 and 6.625% Senior Notes due 2023, the “2013 Notes”) by T-Mobile USA.

Under the terms of the Registration Rights Agreements, the Company and the subsidiary guarantors have agreed to use commercially reasonable efforts to file a registration statement covering an offer to exchange the 2013 Notes for Exchange Securities (as defined in the Registration Rights Agreements). The Company has also agreed to use commercially reasonable efforts to have such registration statement declared effective and to consummate the Exchange Offer not later than a specified period after the date such registration statement becomes effective. Alternatively, if the Company is unable to consummate the Exchange Offer under certain conditions, or if holders of the 2013 Notes cannot participate in, or cannot obtain freely transferable Exchange Securities in connection with the Exchange Offer for certain specified reasons, then the Company and the subsidiary guarantors will use commercially reasonable efforts to file a shelf registration statement within the times specified in the Registration Rights Agreements to facilitate resale of the 2013 Notes. All registration expenses (subject to limitations specified in the Registration Rights Agreements) will be paid by the Company.

Should the Company fail to consummate the Exchange Offer within the specified period; or, if a shelf registration statement is required, fail to have the shelf registration statement declared effective, or, if a shelf registration statement has become effective, fail to maintain the effectiveness thereof or the usability of the related prospectus (subject to certain exceptions) for more than a specified period within any twelve-month period, the Company will be required to pay certain additional interest as provided in the Registration Rights Agreements.

Capital Leases

Capital lease agreements are primarily for distributed antenna systems, with varying expiration terms through 2028. Assets and future obligations related to capital leases are included in property and equipment, short-term debt and long-term debt, respectively. Depreciation of assets held under capital leases is included in depreciation and amortization expense. As of December 31, 2012, capital lease obligations were not significant. Future minimum payments required under capital leases, including interest, over their remaining terms for the twelve months ended September 30 are $40 million in 2014, $41 million in 2015, $42 million in 2016, $43 million in 2017, $44 million in 2018, and $306 million thereafter, for a total of $516 million, including $160 million in interest.

Short-term Debt

The Company maintains vendor financing arrangements with its primary network equipment suppliers. Under the respective agreements, the Company can obtain extended financing terms. The interest rate on the vendor financing arrangements is determined based on the difference between LIBOR and a specified margin per the agreements. Obligations under the vendor financing arrangements are included in short-term debt. As of September 30, 2013, the outstanding balance was $178 million. As of December 31, 2012, there was no outstanding balance.

Long-term Financial Obligation

In November 2012, T-Mobile conveyed to Crown Castle International Corp. (“CCI”) the exclusive right to manage and operate approximately 7,100 wireless communication tower sites in exchange for net proceeds of $2.5 billion (the “Tower Transaction”). The Company recorded a long-term financial obligation in the amount of the net proceeds received from CCI. T-Mobile recognizes interest expense on the financial obligation at a rate of approximately 8% using the effective interest method. The financial obligation is increased by accrued interest expense and amortized through contractual leaseback payments made by T-Mobile to CCI and through estimated future net cash flows generated and retained by CCI from operation of the tower sites. The long-term financial obligation was $2.5 billion as of September 30, 2013 and December 31, 2012, respectively. For further information, see Note 4 – Tower Transaction to the audited Consolidated Financial Statements for the three years ended December 31, 2012, included in the Current Report on Form 8-K filed on June 18, 2013.

Fair Value of Long-term Notes Payable to Affiliates and Debt

The fair value of the Company’s variable-rate notes payable to affiliates was determined based on a discounted cash flow approach which considers the future cash flows discounted at current rates. The approach includes an estimate for the stand-alone credit risk of T-Mobile. The Company’s variable-rate notes payable to affiliates are classified as Level 2 in the fair value hierarchy. In October 2013, Deutsche Telekom sold the fixed-rate notes payable to affiliates to third parties. The fair value of the Company’s fixed-rate notes payable to affiliates as of September 30, 2013 was determined based on the selling price as of October 8, 2013. This is a quoted market price in an active market, and therefore the fixed-rate notes payable to affiliates in an aggregate principal amount of $5.6 billion were transferred from Level 2 and are now classified as Level 1 in the fair value hierarchy. The fair value of the Company’s long-term debt was determined based on quoted market prices in active markets, and therefore are classified as Level 1 in the fair value hierarchy. The fair value hierarchy is described in Note 6 – Fair Value Measurements and Derivative Instruments.

The carrying amounts and fair values of the Company’s notes payable to affiliates and long-term debt were as follows:

	September 30, 2013				December 31, 2012
(in millions)	Carrying Amount		Fair Value		Carrying Amount		Fair Value
Variable-rate notes payable to affiliates	$	5,600	$	5,480	$	—	$	—
Fixed-rate notes payable to affiliates	5,600		5,601		14,945		14,721
Long-term debt principal, excluding capital leases	6,000		6,142		—		—

Although the Company has determined the estimated fair value amounts using available market information and commonly accepted valuation methodologies, considerable judgment is required in interpreting market data to develop fair value estimates for the variable-rate notes payable to affiliates and long-term debt. The fair value estimates are based on information available as of September 30, 2013 and December 31, 2012. As such, the Company’s estimates are not necessarily indicative of the amount that the Company could realize in a current market exchange.

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Condensed Consolidated Statements of Comprehensive Income (Loss) (Unaudited) (Parenthetical) (USD $) In Millions, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Net gain on cross currency interest rate swaps, tax	$ 0	$ 36	$ 13	$ 10
Net gain (loss) on foreign currency translation, tax	0	(22)	(37)	2
Unrealized gain on available for sale securities, tax	$ 0	$ 0	$ 0	$ 0

XML

Related Party Transactions (Transactions with Deutsche Telekom) (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012	Dec. 31, 2012
Assets
Accounts receivable from affiliates	$ 19		$ 19		$ 682
Other current assets	676		676		675
Other assets	948		948		551
Liabilities
Current payables to affiliates	305		305		1,619
Long-term payables to affiliates	11,200		11,200		13,655
Condensed Consolidated Statements of Comprehensive Income:
Interest expense to affiliates	183	165	586	487
Other comprehensive income (loss), net of tax	0	24	(39)	19
Net cash provided by operating activities			2,541	2,707
Deutsche Telekom [Member]
Assets
Accounts receivable from affiliates	19		19		682
Liabilities
Current payables to affiliates	305		305		1,619
Long-term payables to affiliates	11,200		11,200		13,655
Condensed Consolidated Statements of Comprehensive Income:
Fees incurred for use of the T-Mobile brand	14	12	39	37
Expenses for telecommunications and IT services	27	23	77	94
Interest expense to affiliates	183	165	586	487
Other comprehensive income (loss), net of tax	0	23	(39)	19
Deutsche Telekom [Member] | Interest Rate Swaps [Member]
Assets
Other current assets	0		0		106
Deutsche Telekom [Member] | Cross Currency Interest Rate Swaps [Member]
Assets
Other assets	$ 0		$ 0		$ 144

XML

Condensed Consolidated Balance Sheets (Unaudited) (USD $) In Millions, unless otherwise specified	Sep. 30, 2013	Dec. 31, 2012
Current assets
Cash and cash equivalents	$ 2,365	$ 394
Accounts receivable, net of allowances for uncollectible accounts of $330 and $289	3,370	2,678
Accounts receivable from affiliates	19	682
Inventory	761	457
Current portion of deferred tax assets, net	773	655
Other current assets	676	675
Total current assets	7,964	5,541
Property and equipment, net of accumulated depreciation of $19,320 and $17,744	15,370	12,807
Goodwill	1,683	0
Spectrum licenses	18,414	14,550
Other intangible assets, net of accumulated amortization of $404 and $243	1,297	79
Investments in unconsolidated affiliates	55	63
Long-term investments	36	31
Other assets	948	551
Total assets	45,767	33,622
Current liabilities
Accounts payable and accrued liabilities	4,324	3,475
Current payables to affiliates	305	1,619
Short-term debt	195	0
Deferred revenue	447	290
Other current liabilities	243	208
Total current liabilities	5,514	5,592
Long-term payables to affiliates	11,200	13,655
Long-term debt	6,761	0
Long-term financial obligation	2,488	2,461
Deferred tax liabilities	4,695	3,618
Deferred rents	2,062	1,884
Other long-term liabilities	632	297
Total long-term liabilities	27,838	21,915
Commitments and contingencies
Stockholders' equity
Preferred stock, par value $0.00001 per share, 100,000,000 shares authorized; no shares issued and outstanding	0	0
Common stock, par value $0.00001 per share, 1,000,000,000 shares authorized; 729,526,906 and 535,286,077 shares issued, 728,144,401 and 535,286,077 shares outstanding	0	0
Additional paid-in capital	35,481	29,197
Treasury stock, at cost, 1,382,505 and 0 shares issued	0	0
Accumulated other comprehensive income	2	41
Accumulated deficit	(23,068)	(23,123)
Total stockholders' equity	12,415	6,115
Total liabilities and stockholders' equity	$ 45,767	$ 33,622

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Fair Value Measurements and Derivative Instruments (Effect Of Derivative Instruments On Earnings And Other Comprehensive Income) (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Designated as Hedging Instrument [Member] | Cross Currency Interest Rate Swaps [Member] | Other Comprehensive Income (Loss) [Member]
Derivative
Gain (loss) on derivative instrument	$ 0	$ 92	$ (17)	$ 15
Designated as Hedging Instrument [Member] | Cross Currency Interest Rate Swaps [Member] | Interest Expense to Affiliates [Member]
Derivative
Gain (loss) on derivative instrument	0	4	53	11
Not Designated as Hedging Instrument [Member] | Interest Rate Swaps [Member] | Interest Expense to Affiliates [Member]
Derivative
Gain (loss) on derivative instrument	$ 0	$ 28	$ 8	$ 74

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Stock-Based Compensation (Tables)

9 Months Ended

Sep. 30, 2013

Disclosure of Compensation Related Costs, Share-based Payments [Abstract]

Schedule of Compensation Cost for Share-based Payment Arrangements

Stock-based compensation expense and related income tax benefits for the stock awards were as follows:

(in millions)	Three Months Ended September 30, 2013		Nine Months Ended September 30, 2013
Stock-based compensation expense	$	48	$	54
Income tax benefit related to stock-based compensation	18		21

Schedule of Nonvested Share Activity

The following activity occurred under the RSU and PSU awards:

	Units		Weighted Average Grant-Date Fair Value
Nonvested, December 31, 2012	—		$	—
Granted	24,584,884		22.03
Vested	(17,866	)	21.20
Forfeited	(962,345	)	21.20
Nonvested, September 30, 2013	23,604,673		$	22.06

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Transaction with MetroPCS (Tables)

9 Months Ended

Sep. 30, 2013

Business Combinations [Abstract]

Schedule of Effects on Additional Paid In Captial as a Result of Recapitalization

The effects on additional paid-in capital as a result of the debt recapitalization are presented in the following table:

(in millions)	Debt Recapitalization
Retirement of notes payable to affiliates	$	14,450
Elimination of net unamortized discounts and premiums on notes payable to affiliates	434
Issuance of new notes payable to affiliates	(11,200		)
Settlement of accounts receivable from affiliates and other outstanding balances	(363		)
Income tax effect	(178		)
Total	$	3,143

Schedule of Business Acquisitions, by Acquisition

The fair value of the consideration transferred, based on the market price of MetroPCS shares on the Acquisition Date, consisted of the following:

(in millions)	Purchase Consideration
Fair value of MetroPCS shares	$	2,886
Fair value of MetroPCS stock options	84
Cash consideration paid to MetroPCS stock option holders	1
Total purchase consideration	$	2,971

Schedule of Recognized Identified Assets Acquired and Liabilities Assumed

The following table summarizes the allocation of the preliminary purchase price:

(in millions)	Preliminary Fair Value
Assets
Cash and cash equivalents	$	2,144
Accounts receivable, net	98
Inventory	171
Other current assets	240
Property and equipment	1,475
Spectrum licenses	3,818
Other intangible assets	1,376
Other assets	10
Total assets acquired	9,332
Liabilities and Stockholders’ Equity
Accounts payable and accrued liabilities	475
Deferred revenues	187
Other current liabilities	15
Deferred tax liabilities	735
Long-term debt	6,277
Other long-term liabilities	355
Total liabilities assumed	8,044
Net identifiable assets acquired	1,288
Goodwill	1,683
Net assets acquired	$	2,971

Business Acquisition, Supplemental Information

The following supplemental information presents the financial results of MetroPCS operations included in the condensed consolidated statements of comprehensive income (loss) since May 1, 2013 for the three and nine months endedSeptember 30, 2013:

(in millions)	Three Months Ended September 30, 2013		Nine Months Ended September 30, 2013
Total revenues	$	1,273	$	2,072
Income before income taxes	87		103

Business Acquisition, Pro Forma Information

The following pro forma consolidated results of net income for the nine months endedSeptember 30, 2013 and 2012 assume the business combination was completed as of January 1, 2012, respectively:

	Nine Months Ended September 30,
(in millions, except per share amounts)	2013		2012
Pro forma revenues	$	19,331	$	18,720
Pro forma net income (loss)	57		(7,283		)
Pro forma basic earnings (loss) per share	$	0.08	$	(10.13	)
Pro forma diluted earnings (loss) per share	0.08		(10.13		)

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Equipment Installment Plan Receivables (Gross Receivables by Credit Category) (Details) (Equipment Installment Plan Receivable [Member], USD $) In Millions, unless otherwise specified	Sep. 30, 2013	Dec. 31, 2012
Financing Receivable, Recorded Investment [Line Items]
Equipment installment plan receivables, gross	$ 2,142	$ 816
Unbilled Revenues [Member]
Financing Receivable, Recorded Investment [Line Items]
Equipment installment plan receivables	2,037	769
Billed Revenues [Member]
Financing Receivable, Recorded Investment [Line Items]
Equipment installment plan receivables	74	34
Equipment installment plan receivables, past due	31	13
Prime [Member]
Financing Receivable, Recorded Investment [Line Items]
Equipment installment plan receivables, gross	1,130	353
Prime [Member] | Unbilled Revenues [Member]
Financing Receivable, Recorded Investment [Line Items]
Equipment installment plan receivables	1,084	337
Prime [Member] | Billed Revenues [Member]
Financing Receivable, Recorded Investment [Line Items]
Equipment installment plan receivables	35	13
Equipment installment plan receivables, past due	11	3
Subprime [Member]
Financing Receivable, Recorded Investment [Line Items]
Equipment installment plan receivables, gross	1,012	463
Subprime [Member] | Unbilled Revenues [Member]
Financing Receivable, Recorded Investment [Line Items]
Equipment installment plan receivables	953	432
Subprime [Member] | Billed Revenues [Member]
Financing Receivable, Recorded Investment [Line Items]
Equipment installment plan receivables	39	21
Equipment installment plan receivables, past due	$ 20	$ 10

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Notes Payable to Affiliates and Debt (Narrative) (Details) (USD $)	1 Months Ended	9 Months Ended
	Nov. 30, 2012	Sep. 30, 2013	Dec. 31, 2012
Twelve months ending September 30,
2014		$ 40,000,000
2015		41,000,000
2016		42,000,000
2017		43,000,000
2018		44,000,000
Thereafter		306,000,000
Total future minimum payments		516,000,000
Future minimum payments, interest included		160,000,000
Short-term Debt
Short-term debt		195,000,000	0
Long-term Financial Obligation
Net proceeds, financial obligation	2,500,000,000
Imputed interest rate, financial obligation		8.00%
Long-term financial obligation		2,488,000,000	2,461,000,000
Product Financing Arrangement [Member]
Short-term Debt
Short-term debt		$ 178,000,000	$ 0

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Guarantor Financial Information (Condensed Consolidating Statement of Cash Flows Information) (Details) (USD $) In Millions, unless otherwise specified	9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012
Operating activities
Net cash provided by operating activities	$ 2,541	$ 2,707
Investing activities
Purchases of property and equipment	(3,143)	(2,003)
Purchases of intangible assets	(52)	(379)
Short term affiliate loan receivable, net	300	(297)
Cash and cash equivalents acquired in MetroPCS business combination	2,144	0
Change in restricted cash equivalents	(100)	0
Investments in unconsolidated affiliates, net	(22)	16
Other, net	5	(4)
Net cash used in investing activities	(868)	(2,667)
Financing activities
Proceeds from issuance of long-term debt	498	0
Repayments of short-term debt for purchases of property and equipment	(194)	0
Repayments related to a variable interest entity	(80)	0
Distribution to affiliate as a result of debt recapitalization	(41)	0
Proceeds from exercise of stock options	116	0
Excess tax benefit from stock-based compensation	4	0
Other, net	(5)	0
Net cash provided by financing activities	298	0
Change in cash and cash equivalents	1,971	40
Beginning of period	394	390
End of period	2,365	430
Consolidating and Eliminating Adjustments [Member]
Operating activities
Net cash provided by operating activities	0	0
Investing activities
Purchases of property and equipment	0	0
Purchases of intangible assets	0	0
Short term affiliate loan receivable, net	0	0
Cash and cash equivalents acquired in MetroPCS business combination	0
Change in restricted cash equivalents	0
Investments in unconsolidated affiliates, net	0	0
Other, net	0	0
Net cash used in investing activities	0	0
Financing activities
Proceeds from issuance of long-term debt	0
Repayments of short-term debt for purchases of property and equipment	0
Repayments related to a variable interest entity	0
Distribution to affiliate as a result of debt recapitalization	0
Proceeds from exercise of stock options	0
Excess tax benefit from stock-based compensation	0
Other, net	0
Net cash provided by financing activities	0	0
Change in cash and cash equivalents	0	0
Beginning of period	0	0
End of period	0	0
Parent [Member]
Operating activities
Net cash provided by operating activities	304	0
Investing activities
Purchases of property and equipment	0	0
Purchases of intangible assets	0	0
Short term affiliate loan receivable, net	0	0
Cash and cash equivalents acquired in MetroPCS business combination	737
Change in restricted cash equivalents	0
Investments in unconsolidated affiliates, net	0	0
Other, net	0	0
Net cash used in investing activities	737	0
Financing activities
Proceeds from issuance of long-term debt	0
Repayments of short-term debt for purchases of property and equipment	0
Repayments related to a variable interest entity	0
Distribution to affiliate as a result of debt recapitalization	0
Proceeds from exercise of stock options	116
Excess tax benefit from stock-based compensation	0
Other, net	0
Net cash provided by financing activities	116	0
Change in cash and cash equivalents	1,157	0
Beginning of period	0	0
End of period	1,157	0
Issuer [Member]
Operating activities
Net cash provided by operating activities	(921)	0
Investing activities
Purchases of property and equipment	0	0
Purchases of intangible assets	0	0
Short term affiliate loan receivable, net	0	0
Cash and cash equivalents acquired in MetroPCS business combination	1,407
Change in restricted cash equivalents	0
Investments in unconsolidated affiliates, net	0	0
Other, net	0	0
Net cash used in investing activities	1,407	0
Financing activities
Proceeds from issuance of long-term debt	498
Repayments of short-term debt for purchases of property and equipment	0
Repayments related to a variable interest entity	0
Distribution to affiliate as a result of debt recapitalization	0
Proceeds from exercise of stock options	0
Excess tax benefit from stock-based compensation	0
Other, net	0
Net cash provided by financing activities	498	0
Change in cash and cash equivalents	984	0
Beginning of period	0	0
End of period	984	0
Guarantor Subsidiaries [Member]
Operating activities
Net cash provided by operating activities	3,130	2,688
Investing activities
Purchases of property and equipment	(3,143)	(2,003)
Purchases of intangible assets	(52)	(379)
Short term affiliate loan receivable, net	300	(297)
Cash and cash equivalents acquired in MetroPCS business combination	0
Change in restricted cash equivalents	(100)
Investments in unconsolidated affiliates, net	(22)	16
Other, net	5	(4)
Net cash used in investing activities	(3,012)	(2,667)
Financing activities
Proceeds from issuance of long-term debt	0
Repayments of short-term debt for purchases of property and equipment	(194)
Repayments related to a variable interest entity	(80)
Distribution to affiliate as a result of debt recapitalization	(41)
Proceeds from exercise of stock options	0
Excess tax benefit from stock-based compensation	4
Other, net	(5)
Net cash provided by financing activities	(316)	0
Change in cash and cash equivalents	(198)	21
Beginning of period	287	339
End of period	89	360
Non-Guarantor Subsidiaries [Member]
Operating activities
Net cash provided by operating activities	28	19
Investing activities
Purchases of property and equipment	0	0
Purchases of intangible assets	0	0
Short term affiliate loan receivable, net	0	0
Cash and cash equivalents acquired in MetroPCS business combination	0
Change in restricted cash equivalents	0
Investments in unconsolidated affiliates, net	0	0
Other, net	0	0
Net cash used in investing activities	0	0
Financing activities
Proceeds from issuance of long-term debt	0
Repayments of short-term debt for purchases of property and equipment	0
Repayments related to a variable interest entity	0
Distribution to affiliate as a result of debt recapitalization	0
Proceeds from exercise of stock options	0
Excess tax benefit from stock-based compensation	0
Other, net	0
Net cash provided by financing activities	0	0
Change in cash and cash equivalents	28	19
Beginning of period	107	51
End of period	$ 135	$ 70

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Transaction with MetroPCS (Consideration Transferred) (Details) (MetroPCS [Member], USD $)	0 Months Ended
	Apr. 30, 2013
MetroPCS [Member]
Business Acquisition [Line Items]
Percentage of voting interests held by MetroPCS	26.00%
Fair value of MetroPCS shares	$ 2,886,000,000
Fair value of MetroPCS stock options	84,000,000
Cash consideration paid to MetroPCS stock option holders	1,000,000
Total purchase consideration	2,971,000,000
Share price	$ 11.84
Distribution to stockholders, per share	$ 4.05
Distribution to stockholders	$ 1,500,000,000
Business acquisition, share price	$ 7.79

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Consolidation and Basis of Presentation Consolidation and Basis of Presentation (Details) (USD $) In Millions, unless otherwise specified	Sep. 30, 2013	Dec. 31, 2012
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Restricted cash equivalents	$ 100	$ 0
Guarantee liabilities	$ 90	$ 0

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Transaction with MetroPCS (Transaction Overview) (Details) (USD $)	3 Months Ended		9 Months Ended		0 Months Ended	3 Months Ended	9 Months Ended	0 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012	Apr. 30, 2013 MetroPCS [Member]	Sep. 30, 2013 MetroPCS [Member]	Sep. 30, 2013 MetroPCS [Member]	Apr. 30, 2013 Deutsche Telekom [Member]
Business Acquisition [Line Items]
Retirement of notes payable to affiliates								$ 14,450,000,000
Issuance of new notes payable to affiliates								11,200,000,000
Line of credit, affiliate, maximum borrowing capacity								500,000,000
Distribution to stockholders					1,500,000,000
Percentage of voting interests acquired by Deutsche Telekom					74.00%
MetroPCS transaction and integration costs	$ 12,000,000	$ 0	$ 51,000,000	$ 0		$ 12,000,000	$ 51,000,000

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Fair Value Measurements and Derivative Instruments

9 Months Ended

Sep. 30, 2013

Fair Value Disclosures [Abstract]

Fair Value Measurements and Derivative Instruments

Note 6 – Fair Value Measurements and Derivative Instruments

T-Mobile accounts for certain assets and liabilities at fair value. Fair value is a market-based measurement which is determined based on assumptions that market participants would use in pricing an asset or liability. As a basis for considering such assumptions, T-Mobile uses the three-tiered fair value hierarchy, which prioritizes the inputs used in measuring fair value as follows:

Level 1 Observable inputs that reflect quoted prices in active markets for identical assets or liabilities;

Level 2 Inputs other than the quoted prices in active markets that are observable either directly or indirectly; and

Level 3 Unobservable inputs for which there is little or no market data, which require T-Mobile to develop its own assumptions.

T-Mobile uses observable market data, when available. Assets and liabilities measured at fair value included interest rate swaps, cross currency interest rate swaps designated as cash flow hedges, and investments and obligations related to T-Mobile’s nonqualified deferred compensation plan.

Interest Rate Swaps

Prior to the closing of the business combination, T-Mobile managed interest rate risk related to its notes payable to affiliates by entering into interest rate swap agreements. T-Mobile held seven interest rate swaps with a total notional amount of $3.6 billion as of December 31, 2012. These interest rate swap agreements were not designated as hedging instruments and changes in fair value related to such agreements were recognized in interest expense to affiliates.

Interest rate swaps were valued using discounted cash flow techniques. These techniques incorporated market-based observable inputs such as interest rates and credit spreads, considering each instrument’s term, notional amount, discount rate and credit risk. T-Mobile’s interest rate swaps were classified as Level 2 in the fair value hierarchy.

Prior to the closing of the business combination with MetroPCS, Deutsche Telekom recapitalized T-Mobile by retiring the existing T-Mobile notes payable to affiliates and all related derivative instruments, which included the interest rate swaps. The related balance in accumulated other comprehensive income was reclassified into net income (loss). As of September 30, 2013, there were no outstanding interest rate swaps.

Cross Currency Interest Rate Swaps

Prior to the closing of the business combination, T-Mobile managed foreign currency risk along with interest rate risk through cross currency interest rate swap agreements related to its intercompany Euro denominated notes payable to affiliates, which were entered into upon assumption of the notes to fix the future interest and principal payments in U.S. dollars, as well as to mitigate the impact of foreign currency transaction gains or losses over the terms of the notes payable to affiliates extending to 2025. T-Mobile had three cross currency interest rate swaps with a total notional amount of $2.3 billion as of December 31, 2012. These cross currency interest rate swaps were designated as cash flow hedges and met the criteria for hedge accounting. As a result, the change in fair value was recorded in other comprehensive income (loss) and reclassified to interest expense to affiliates in the period in which the hedged transaction affected earnings. T-Mobile evaluated hedge effectiveness at the inception of the hedge prospectively, as well as retrospectively, and at the end of each reporting period. The hedges were evaluated as highly effective prior to the closing of the business combination with MetroPCS, thus no gain (loss) has been recognized due to hedge ineffectiveness.

Cross currency interest rate swaps were valued using discounted cash flow techniques. These techniques incorporated market-based observable inputs such as interest rates and credit spreads, considering each instrument’s term, notional amount, discount rate and credit risk. T-Mobile’s cross currency interest rate swaps were classified as Level 2 in the fair value hierarchy.

Prior to the closing of the business combination with MetroPCS, Deutsche Telekom recapitalized T-Mobile by retiring the existing T-Mobile notes payable to affiliates and all related derivative instruments, which included cross currency interest rate swaps. The related balance in accumulated other comprehensive income was reclassified into net income (loss). As of September 30, 2013, there were no outstanding cross currency interest rate swaps.

Nonqualified Deferred Compensation Plan

T-Mobile’s nonqualified deferred compensation plan includes available for sale securities and obligations, which are valued using quoted market prices in active markets or broker-dealer quotations. The nonqualified deferred compensation plan assets and liabilities are classified as Level 1 in the three‑tier value hierarchy.

Fair Value of Financial Instruments

Fair value of financial instruments measured on a recurring basis by level were as follows:

	Balance Sheet Location	September 30, 2013
(in millions)		Level 1		Level 2		Level 3		Total
Assets
Nonqualified deferred compensation	Long-term investments	$	34	$	—	$	—	$	34
Liabilities
Nonqualified deferred compensation	Other long-term liabilities	34		—		—		34

	Balance Sheet Location	December 31, 2012
(in millions)		Level 1		Level 2		Level 3		Total
Assets
Interest rate swaps	Other current assets	$	—	$	106	$	—	$	106
Cross currency interest rate swaps	Other assets	—		144		—		144
Nonqualified deferred compensation	Long-term investments	31		—		—		31
Liabilities
Nonqualified deferred compensation	Other long-term liabilities	31		—		—		31

The following table summarizes the activity related to derivatives instruments:

	Three Months Ended September 30,				Nine Months Ended September 30,
(in millions)	2013		2012		2013			2012
Gain (loss) recognized in other comprehensive income (loss):
Cross currency interest rate swaps	$	—	$	92	$	(17	)	$	15
Gain recognized in interest expense to affiliates:
Interest rate swaps	—		28		8			74
Cross currency interest rate swaps	—		4		53			11

Notes Payable to Affiliates and Long-term Debt

See Note 7 – Notes Payable to Affiliates and Debt for the fair value of T-Mobile’s notes payable to affiliates and long-term debt.

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Guarantor Financial Information (Narrative) (Details) (USD $) In Millions, unless otherwise specified	Sep. 30, 2013	Apr. 30, 2013 Senior Notes [Member]	Sep. 30, 2013 5.250% Senior Notes due 2018 [Member]	Aug. 31, 2013 5.250% Senior Notes due 2018 [Member]
Condensed Financial Statements, Captions [Line Items]
Notes payables to affiliates		$ 11,200
Long-term debt, gross	6,778	5,900	500
Long-term debt issued, principal				$ 500

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Related Party Transactions (Tables)

9 Months Ended

Sep. 30, 2013

Related Party Transactions [Abstract]

Schedule of Related Party Transactions

The following table summarizes the significant balances with Deutsche Telekom or its affiliates in the condensed consolidated balance sheets:

(in millions)	September 30, 2013		December 31, 2012
Assets
Accounts receivable from affiliates	$	19	$	682
Interest rate swaps	—		106
Cross currency interest rate swaps	—		144
Liabilities
Current payables to affiliates	$	305	$	1,619
Long-term payables to affiliates	11,200		13,655

The following table summarizes the impact of significant transactions with Deutsche Telekom or its affiliates in the condensed consolidated statements of comprehensive income (loss):

	Three Months Ended September 30,				Nine Months Ended September 30,
(in millions)	2013		2012		2013			2012
Fees incurred for use of the T-Mobile brand	$	14	$	12	$	39		$	37
Expenses for telecommunications and IT services	27		23		77			94
Interest expense to affiliates	183		165		586			487
Net gain (loss) recorded in other comprehensive income (loss), net of tax	—		23		(39		)	19

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Transaction with MetroPCS (Proforma Financial Information) (Details) (USD $)	9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012
MetroPCS [Member]
Business Acquisition [Line Items]
Pro forma revenues	$ 19,331,000,000	$ 18,720,000,000
Pro forma net income (loss)	57,000,000	(7,283,000,000)
Pro forma basic earnings (loss) per share	$ 0.08	$ (10.13)
Pro forma diluted earnings (loss) per share	$ 0.08	$ (10.13)
Senior unsecured notes issued	14,700,000,000
Senior unsecured notes of acquiror retired	14,500,000,000
Senior unsecured notes of acquiree retired	2,500,000,000
Pro Forma Adjustment, Acquisition-related Costs [Member] | MetroPCS [Member]
Business Acquisition [Line Items]
Pro forma net income (loss)	205,000,000	(205,000,000)
Pro Forma Adjustment, (Increase) Decrease in Tax Expense [Member]
Business Acquisition [Line Items]
Pro forma net income (loss)	(54,000,000)	194,000,000
Pro Forma Adjustment, (Increase) in Amortization and Depreciation Expense [Member]
Business Acquisition [Line Items]
Pro forma net income (loss)	3,000,000	(137,000,000)
Pro Forma Adjustment, (Increase) in Interest Expense [Member]
Business Acquisition [Line Items]
Pro forma net income (loss)	$ (91,000,000)	$ (107,000,000)

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Income Taxes

9 Months Ended

Sep. 30, 2013

Income Tax Disclosure [Abstract]

Income Taxes

Note 9 – Income Taxes

Income tax expense for the three months endedSeptember 30, 2013, compared to same period in 2012, increased primarily due to fluctuations in income and changes in Puerto Rico taxes.  Income tax expense for the nine months endedSeptember 30, 2013, compared to the same period in 2012, decreased primarily due to lower pretax income for the nine months endedSeptember 30, 2013, as compared to pretax income, exclusive of impairment charges, for the same period in 2012.

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Goodwill, Spectrum Licenses and Intangible Assets

9 Months Ended

Sep. 30, 2013

Goodwill and Intangible Assets Disclosure [Abstract]

Goodwill, Spectrum Licenses, and Intangible Assets

Note 5 – Goodwill, Spectrum Licenses and Intangible Assets

Goodwill and Spectrum Licenses

Carrying values of goodwill and spectrum licenses were as follows:

(in millions)	September 30, 2013		December 31, 2012
Goodwill	$	1,683	$	—
Spectrum licenses	18,414		14,550

Goodwill and spectrum licenses include $1.7 billion and $3.8 billion, respectively, based on preliminary fair values, acquired through the business combination with MetroPCS. See Note 2 – Transaction with MetroPCS for further information.

Other Intangible Assets

The components of intangible assets were as follows:

(in millions)	Useful Lives	September 30, 2013			December 31, 2012
Customer lists	1 - 6 years	$	1,313		$	209
Trademarks	1 - 8 years	291			55
Other	Up to 28 years	97			58
Accumulated amortization		(404		)	(243		)
Other intangible assets, net		$	1,297		$	79

Customer lists, trademarks and other intangible assets include $1.1 billion, $233 million and $39 million respectively, based on preliminary fair values, related to the business combination with MetroPCS. See Note 2 – Transaction with MetroPCS for further information. Estimated aggregate future amortization expense for intangible assets subject to amortization are $92 million for the three months ended December 31, 2013, $333 million in 2014, $278 million in 2015, $222 million in 2016, $163 million in 2017 and $209 million thereafter.

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Condensed Consolidated Statements of Stockholders' Equity (Unaudited) (USD $) In Millions, except Share data, unless otherwise specified	Total USD ($)	Common Shares Outstanding [Member]	Treasury Stock [Member]	Par Value and Additional Paid-in Capital [Member] USD ($)	Accumulated Other Comprehensive Income [Member] USD ($)	Accumulated Deficit [Member] USD ($)
Balance, beginning of period at Dec. 31, 2012	$ 6,115			$ 29,197	$ 41	$ (23,123)
Common stock, shares outstanding, beginning at Dec. 31, 2012	535,286,077	535,286,077
Treasury stock, shares, beginning at Dec. 31, 2012	0		0
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	55					55
Other comprehensive income (loss), net of tax	(39)				(39)
Effects of debt recapitalization	3,143			3,143
MetroPCS shares converted upon reverse merger, shares		184,487,309	1,382,505
MetroPCS shares converted upon reverse merger, net of treasury stock withheld for taxes	2,971			2,971
Stock-based compensation	54			54
Exercise of stock options and restricted stock vested and issued, shares		8,371,015
Exercise of stock options and restricted stock vested and issued, amount	116			116
Balance, ending of period at Sep. 30, 2013	$ 12,415			$ 35,481	$ 2	$ (23,068)
Common stock, shares outstanding, ending at Sep. 30, 2013	728,144,401	728,144,401
Treasury stock, shares, ending at Sep. 30, 2013	1,382,505		1,382,505

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Notes Payable to Affiliates and Debt (Notes Payable to Affiliates) (Details) (USD $) In Millions, unless otherwise specified			0 Months Ended														12 Months Ended				12 Months Ended	9 Months Ended
	Sep. 30, 2013	Dec. 31, 2012	Apr. 30, 2013 Deutsche Telekom [Member]	Sep. 30, 2013 Deutsche Telekom [Member]	Dec. 31, 2012 Deutsche Telekom [Member]	Dec. 31, 2012 Deutsche Telekom [Member] Senior Notes [Member]	Sep. 30, 2013 Deutsche Telekom [Member] Senior Notes due 2019 [Member]	Sep. 30, 2013 Deutsche Telekom [Member] Senior Reset Notes due 2019 [Member]	Sep. 30, 2013 Deutsche Telekom [Member] Senior Notes due 2020 [Member]	Sep. 30, 2013 Deutsche Telekom [Member] Senior Reset Notes due 2020 [Member]	Sep. 30, 2013 Deutsche Telekom [Member] Senior Notes due 2021 [Member]	Sep. 30, 2013 Deutsche Telekom [Member] Senior Reset Notes due 2021 [Member]	Sep. 30, 2013 Deutsche Telekom [Member] Senior Notes due 2022 [Member]	Sep. 30, 2013 Deutsche Telekom [Member] Senior Reset Notes due 2022 [Member]	Sep. 30, 2013 Deutsche Telekom [Member] Senior Notes due 2023 [Member]	Sep. 30, 2013 Deutsche Telekom [Member] Senior Reset Notes due 2023 [Member]	Dec. 31, 2012 Deutsche Telekom [Member] Notes payable to affiliates, due 2013 [Member]	Dec. 31, 2012 Deutsche Telekom [Member] Notes payable to affiliates, due 2014 [Member]	Dec. 31, 2012 Deutsche Telekom [Member] Notes payable to affiliates, due 2015 [Member]	Dec. 31, 2012 Deutsche Telekom [Member] Notes payable to affiliates, due 2016 [Member]	Dec. 31, 2012 Deutsche Telekom [Member] Notes payable to affiliates, thereafter [Member]	Sep. 30, 2013 Subsequent Event Deutsche Telekom [Member]	Sep. 30, 2013 Subsequent Event Deutsche Telekom [Member] Senior Notes due 2019 [Member]	Sep. 30, 2013 Subsequent Event Deutsche Telekom [Member] Senior Notes due 2020 [Member]	Sep. 30, 2013 Subsequent Event Deutsche Telekom [Member] Senior Notes due 2021 [Member]	Sep. 30, 2013 Subsequent Event Deutsche Telekom [Member] Senior Notes due 2022 [Member]	Sep. 30, 2013 Subsequent Event Deutsche Telekom [Member] Senior Notes due 2023 [Member]
Debt Instrument [Line Items]
Retirement of notes payable to affiliates			$ 14,450
Notes payable to affiliate, principal balance sold to third party creditors																						5,600	1,250	1,250	1,250	1,250	600
Notes payables to affiliates			11,200	11,200		14,945	1,250	1,250	1,250	1,250	1,250	1,250	1,250	1,250	600	600	1,273	2,348	1,905	1,000	7,956
Unamortized discount and premium, net						463
Current payables to affiliates	305	1,619		305	1,619	1,290
Long-term payables to affiliates	$ 11,200	$ 13,655		$ 11,200	$ 13,655	$ 13,655
Interest rate, stated percentage							6.464%	5.578%	6.542%	5.656%	6.633%	5.747%	6.731%	5.845%	6.836%	5.95%			2.843%	2.739%
Interest rate, stated percentage, minimum																	1.772%	2.696%			3.652%
Interest rate, stated percentage, maximum																	7.099%	3.532%			8.195%

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Goodwill, Spectrum Licenses and Intangible Assets (Goodwill and Licenses) (Details) (USD $) In Millions, unless otherwise specified	Sep. 30, 2013	Dec. 31, 2012	Apr. 30, 2013 MetroPCS [Member]
Indefinite-lived Intangible Assets [Line Items]
Goodwill	$ 1,683	$ 0	$ 1,683
Spectrum licenses	18,414	14,550
Acquired spectrum licenses			$ 3,818

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Additional Financial Information (Tables)

9 Months Ended

Sep. 30, 2013

Supplemental Financial Statement Elements [Abstract]

Schedule of Accumulated Other Comprehensive Income (Loss)

The following table summarizes the changes in accumulated other comprehensive income (“AOCI”), net of tax, by component:

(in millions)	Cross Currency Interest Rate Swaps			Foreign Currency Translation			Available-for-Sale Securities		Total
Balance, December 31, 2012	$	(23	)	$	62		$	2	$	41
Unrealized gains (losses) arising during the period	(10		)	42			—		32
Reclassification adjustments recognized in net income	33			(104		)	—		(71		)
Net gain (loss) in other comprehensive income (loss)	23			(62		)	—		(39		)
Balance, September 30, 2013	$	—		$	—		$	2	$	2

Reclassification out of Accumulated Other Comprehensive Income [Table Text Block]

The following table presents the effects on net income of amounts reclassified from AOCI (in millions):

		Amount Reclassified from AOCI to Income
AOCI Component	Location	Three Months Ended September 30, 2013		Nine Months Ended September 30, 2013
Cross Currency Interest Rate Swaps	Interest expense to affiliates	$	—	$	53
	Income tax effect	—		(20		)
	Net of tax	$	—	$	33
Foreign Currency Translation	Other income, net	$	—	$	(166	)
	Income tax effect	—		62
	Net of tax	$	—	$	(104	)
Total reclassifications, net of tax		$	—	$	(71	)

Schedule of Earnings Per Share, Basic and Diluted [Table Text Block]

The computation of basic and diluted earnings (loss) per share was as follows:

	Three Months Ended September 30,						Nine Months Ended September 30,
(in millions, except shares and per share amounts)	2013			2012			2013		2012
Basic and Diluted Earnings (Loss) Per Share:
Net income (loss)	$	(36	)	$	(7,735	)	$	55	$	(7,328	)
Weighted average shares outstanding - basic	726,877,458			535,286,077			642,957,645		535,286,077
Dilutive effect of outstanding stock options and awards	—			—			2,562,879		—
Weighted average shares outstanding - diluted	726,877,458			535,286,077			645,520,524		535,286,077
Earnings (loss) per share - basic	$	(0.05	)	$	(14.45	)	$	0.09	$	(13.69	)
Earnings (loss) per share - diluted	(0.05		)	(14.45		)	0.09		(13.69		)

Schedule of Restructuring and Related Costs

Activities associated with T-Mobile’s restructuring plans and respective accrued liabilities were as follows:

(in millions)	2013 Restructuring Program			2012 Restructuring Program			Total Restructuring
Balance, December 31, 2012	$	—		$	32		$	32
Restructuring costs	54			—			54
Cash payments	(53		)	(9		)	(62		)
Balance, September 30, 2013	$	1		$	23		$	24

Schedule of Cash Flow, Supplemental Disclosures

The following table summarizes T-Mobile’s supplemental cash flows information:

	Nine Months Ended September 30,
(in millions)	2013		2012
Interest and income tax payments:
Interest payments	$	784	$	644
Income tax payments (refunds), net	21		24
Noncash investing and financing activities:
Increase in accounts payable for purchases of property and equipment	53		233
Short-term debt outstanding for financing of property and equipment purchases	178		—
Relinquishment of accounts receivable from affiliates in satisfaction of notes payable to affiliates	—		644
Noncash portion of spectrum license swap transactions	8		1,452
Retirement of notes payable to affiliates	14,450		—
Elimination of net unamortized discounts and premiums on notes payable to affiliates	434		—
Issuance of new notes payable to affiliates	11,200		—
Settlement of accounts receivable from affiliates and other outstanding balances	363		—
Income tax benefit from debt recapitalization	178		—
Net assets acquired in MetroPCS business combination, excluding cash acquired	827		—

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Additional Financial Information (Variable Interest Entities) (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2012
Variable Interest Entity [Line Items]
Consolidated assets of variable interest entity				$ 236
Acquisition price of interest in variable interest entity			94
Payments to acquire interest in variable interest entity	54	40
Payments to acquire interest in variable interest entity, Interest included in payment	$ 14

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Related Party Transactions (Narrative) (Details) (Deutsche Telekom [Member], USD $) In Millions, unless otherwise specified	Sep. 30, 2013
Line of Credit [Member]
Related Party Transaction [Line Items]
Line of credit facility, current borrowing capacity	$ 500
Line of credit facility, amount outstanding	0
Letter of Credit [Member]
Related Party Transaction [Line Items]
Line of credit facility, current borrowing capacity	$ 100

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Guarantor Financial Information

9 Months Ended

Sep. 30, 2013

Condensed Financial Information of Parent Company Only Disclosure [Abstract]

Guarantor Subsidiaries

Note 12 – Guarantor Financial Information

On April 28, 2013, T-Mobile USA (“Issuer”) issued new notes payable to affiliates of $11.2 billion to Deutsche Telekom. As described in more detail in Note 2 – Transaction with MetroPCS, on April 30, 2013, the transactions contemplated by the BCA, were consummated, as a result of which MetroPCS Communications, Inc. (the legal acquirer) acquired all of the outstanding shares of the Issuer. Also on April 30, 2013, the name of MetroPCS Communications, Inc. was changed to T-Mobile US, Inc. In addition, unsecured senior notes of $5.9 billion, including the effects of purchase accounting, were assumed by the Issuer in connection with the closing of the business combination. In August 2013, the Issuer issued unsecured senior notes of $500 million.  Pursuant to the indenture and the applicable supplemental indentures, the notes payable to affiliates and long-term debt, excluding capital leases, are fully and unconditionally guaranteed, jointly and severally, on a senior unsecured basis by T-Mobile (“Parent”) and certain of the Issuer’s wholly owned subsidiaries (“Guarantor Subsidiaries”). The notes payable to affiliates and long-term debt are described in further detail in Note 7 – Notes Payable to Affiliates and Debt.

The guarantees of the Guarantor Subsidiaries are subject to release in limited circumstances only upon the occurrence of certain customary conditions. The indenture governing the notes payable to affiliates and long-term debt contain covenants that, among other things, limit the ability of the Issuer and the Guarantor Subsidiaries to: incur more debt; pay dividends and make distributions; make certain investments; repurchase stock; create liens or other encumbrances; enter into transactions with affiliates; enter into transactions that restrict dividends or distributions from subsidiaries; and merge, consolidate, or sell, or otherwise dispose of, substantially all of their assets. Certain provisions of each of the indentures and the supplemental indentures relating to the long-term debt restrict the ability of the Issuer to loan funds or make payments to Parent. However, the Issuer is allowed to make certain permitted payments to Parent under the terms of each of the indentures and the supplemental indentures.

In 2013, T-Mobile entered into an agreement with Cook Inlet Voice and Data Services, Inc. (“Cook Inlet”) to acquire all of Cook Inlet's interest in Cook Inlet/VoiceStream GSM VII PCS Holdings LLC, (“CIVS VII”), a fully consolidated Non-Guarantor Subsidiary. The transaction was completed in July 2013 and resulted in CIVS VII becoming an indirect wholly-owned subsidiary of T-Mobile USA. CIVS VII was subsequently combined with, and net assets transferred to, T-Mobile License LLC, a wholly-owned Restricted Subsidiary of T-Mobile USA. As a result the net assets of CIVS VII were included in the Guarantor Subsidiaries condensed consolidating balance sheet information. The guarantees of the notes payable to affiliates and long-term debt were unchanged by the transaction. See Note 13 – Additional Financial Information for more information regarding the transaction.

Presented below is the condensed consolidating financial information as of September 30, 2013 and December 31, 2012 and for the three and nine months endedSeptember 30, 2013 and 2012. As the business combination was treated as a “reverse acquisition” and the Issuer was treated as the accounting acquirer, the Issuer’s historical financial statements are the historical financial statements of Parent for comparative purposes. As a result the Parent column only reflects activity in the condensed consolidating financial statements presented below for periods subsequent to the consummation of the business combination on April 30, 2013. The equity method of accounting is used to account for ownership interests in subsidiaries, where applicable.

Condensed Consolidating Balance Sheet Information

As of September 30, 2013

(in millions)	Parent		Issuer		Guarantor Subsidiaries		Non-Guarantor Subsidiaries			Consolidating and Eliminating Adjustments			Consolidated
Assets
Current assets
Cash and cash equivalents	$	1,157	$	984	$	89	$	135		$	—		$	2,365
Accounts receivable, net of allowances for uncollectible accounts	—		—		3,256		114			—			3,370
Accounts receivable from affiliates	—		—		19		—			—			19
Inventory	—		—		761		—			—			761
Current portion of deferred tax assets, net	—		—		758		15			—			773
Other current assets	—		4		666		6			—			676
Total current assets	1,157		988		5,549		270			—			7,964
Property and equipment, net of accumulated depreciation	—		—		14,754		616			—			15,370
Goodwill	—		—		1,683		—			—			1,683
Spectrum licenses	—		—		18,414		—			—			18,414
Other intangible assets, net of accumulated amortization	—		—		1,297		—			—			1,297
Investments in unconsolidated affiliates	—		15		40		—			—			55
Investments in subsidiaries, net	9,328		25,455		—		—			(34,783		)	—
Intercompany receivables	1,927		1,073		—		19			(3,019		)	—
Long-term investments	3		—		33		—			—			36
Other assets	—		4		894		79			(29		)	948
Total assets	$	12,415	$	27,535	$	42,664	$	984		$	(37,831	)	$	45,767
Liabilities and Stockholders' Equity
Current liabilities
Accounts payable and accrued liabilities	$	—	$	189	$	4,007	$	128		$	—		$	4,324
Current payables to affiliates	—		201		104		—			—			305
Short-term debt	—		178		17		—			—			195
Deferred revenue	—		—		447		—			—			447
Other current liabilities	—		—		203		40			—			243
Total current liabilities	—		568		4,778		168			—			5,514
Long-term payables to affiliates	—		11,200		—		—			—			11,200
Long-term debt	—		6,424		337		—			—			6,761
Long-term financial obligation	—		—		364		2,124			—			2,488
Deferred tax liabilities	—		—		4,724		—			(29		)	4,695
Deferred rents	—		—		2,062		—			—			2,062
Negative carrying value of subsidiaries, net	—		—		767		—			(767		)	—
Intercompany payables	—		—		3,019		—			(3,019		)	—
Other long-term liabilities	—		15		617		—			—			632
Total long-term liabilities	—		17,639		11,890		2,124			(3,815		)	27,838
Total stockholders' equity	12,415		9,328		25,996		(1,308		)	(34,016		)	12,415
Total liabilities and stockholders' equity	$	12,415	$	27,535	$	42,664	$	984		$	(37,831	)	$	45,767

Condensed Consolidating Balance Sheet Information

As of December 31, 2012

(in millions)	Parent		Issuer		Guarantor Subsidiaries		Non-Guarantor Subsidiaries			Consolidating and Eliminating Adjustments			Consolidated
Assets
Current assets
Cash and cash equivalents	$	—	$	—	$	287	$	107		$	—		$	394
Accounts receivable, net of allowances for uncollectible accounts	—		—		2,607		71			—			2,678
Accounts receivable from affiliates	—		—		682		—			—			682
Inventory	—		—		457		—			—			457
Current portion of deferred tax assets, net	—		—		640		15			—			655
Other current assets	—		106		565		4			—			675
Total current assets	—		106		5,238		197			—			5,541
Property and equipment, net of accumulated depreciation	—		—		12,129		678			—			12,807
Spectrum licenses	—		—		14,330		220			—			14,550
Other intangible assets, net of accumulated amortization	—		—		79		—			—			79
Investments in unconsolidated affiliates	—		19		44		—			—			63
Investments in subsidiaries, net	—		24,823		—		—			(24,823		)	—
Intercompany receivables	—		—		3,760		71			(3,831		)	—
Long-term investments	—		—		31		—			—			31
Other assets	—		147		352		52			—			551
Total assets	$	—	$	25,095	$	35,963	$	1,218		$	(28,654	)	$	33,622
Liabilities and Stockholder’s Equity
Current liabilities
Accounts payable and accrued liabilities	$	—	$	—	$	3,382	$	93		$	—		$	3,475
Current payables to affiliates	—		1,494		125		—			—			1,619
Deferred revenue	—		—		290		—			—			290
Other current liabilities	—		—		168		40			—			208
Total current liabilities	—		1,494		3,965		133			—			5,592
Long-term payables to affiliates	—		13,655		—		—			—			13,655
Long-term financial obligation	—		—		360		2,101			—			2,461
Deferred tax liabilities	—		—		3,603		15			—			3,618
Deferred rents	—		—		1,884		—			—			1,884
Negative carrying value of subsidiaries, net	—		—		489		—			(489		)	—
Intercompany payables	—		3,831		—		—			(3,831		)	—
Other long-term liabilities	—		—		297		—			—			297
Total long-term liabilities	—		17,486		6,633		2,116			(4,320		)	21,915
Total stockholder’s equity	—		6,115		25,365		(1,031		)	(24,334		)	6,115
Total liabilities and stockholder’s equity	$	—	$	25,095	$	35,963	$	1,218		$	(28,654	)	$	33,622

Condensed Consolidating Statement of Comprehensive Income (Loss) Information

Three Months EndedSeptember 30, 2013

(in millions)	Parent			Issuer			Guarantor Subsidiaries			Non-Guarantor Subsidiaries			Consolidating and Eliminating Adjustments			Consolidated
Revenues
Service revenues	$	—		$	—		$	4,958		$	219		$	(39	)	$	5,138
Equipment sales	—			—			1,643			—			(176		)	1,467
Other revenues	—			—			59			30			(6		)	83
Total revenues	—			—			6,660			249			(221		)	6,688
Operating expenses
Network costs	—			—			1,443			6			(5		)	1,444
Cost of equipment sales	—			—			2,052			155			(192		)	2,015
Customer acquisition	—			—			1,039			—			—			1,039
General and administrative	—			—			871			47			(24		)	894
Depreciation and amortization	—			—			966			21			—			987
MetroPCS transaction and integration costs	—			—			12			—			—			12
Total operating expenses	—			—			6,383			229			(221		)	6,391
Operating income	—			—			277			20			—			297
Other income (expense)
Interest expense to affiliates	—			(183		)	—			—			—			(183		)
Interest expense	—			(84		)	(24		)	(43		)	—			(151		)
Interest income	—			—			50			—			—			50
Other income (expense), net	—			(9		)	2			—			—			(7		)
Total other income (expense), net	—			(276		)	28			(43		)	—			(291		)
Income (loss) before income taxes	—			(276		)	305			(23		)	—			6
Income tax expense (benefit)	—			—			49			(7		)	—			42
Earnings (loss) of subsidiaries	(36		)	240			(13		)	—			(191		)	—
Net income (loss)	(36		)	(36		)	243			(16		)	(191		)	(36		)
Other comprehensive income (loss), net of tax	—			—			—			—			—			—
Total comprehensive income (loss)	$	(36	)	$	(36	)	$	243		$	(16	)	$	(191	)	$	(36	)

Condensed Consolidating Statement of Comprehensive Income (Loss) Information

Three Months EndedSeptember 30, 2012

(in millions)	Parent		Issuer			Guarantor Subsidiaries			Non-Guarantor Subsidiaries		Consolidating and Eliminating Adjustments			Consolidated
Revenues
Service revenues	$	—	$	—		$	4,111		$	178	$	(28	)	$	4,261
Equipment sales	—		—			698			—		(144		)	554
Other revenues	—		—			95			17		(34		)	78
Total revenues	—		—			4,904			195		(206		)	4,893
Operating expenses
Network costs	—		—			1,158			17		(34		)	1,141
Cost of equipment sales	—		—			904			123		(161		)	866
Customer acquisition	—		—			823			—		—			823
General and administrative	—		—			817			34		(11		)	840
Depreciation and amortization	—		—			825			—		—			825
Impairment charges	—		—			8,134			—		—			8,134
Restructuring costs	—		—			36			—		—			36
Other, net	—		—			(179		)	—		—			(179		)
Total operating expenses	—		—			12,518			174		(206		)	12,486
Operating income (loss)	—		—			(7,614		)	21		—			(7,593		)
Other income (expense)
Interest expense to affiliates	—		(155		)	(10		)	—		—			(165		)
Interest income	—		—			20			—		—			20
Other income, net	—		9			6			—		—			15
Total other income (expense), net	—		(146		)	16			—		—			(130		)
Income (loss) before income taxes	—		(146		)	(7,598		)	21		—			(7,723		)
Income tax expense	—		—			6			6		—			12
Loss of subsidiaries	—		(7,589		)	—			—		7,589			—
Net income (loss)	—		(7,735		)	(7,604		)	15		7,589			(7,735		)
Other comprehensive income (loss), net of tax	—		24			(14		)	—		14			24
Total comprehensive income (loss)	$	—	$	(7,711	)	$	(7,618	)	$	15	$	7,603		$	(7,711	)

Condensed Consolidating Statement of Comprehensive Income (Loss) Information

Nine Months EndedSeptember 30, 2013

(in millions)	Parent			Issuer			Guarantor Subsidiaries			Non-Guarantor Subsidiaries			Consolidating and Eliminating Adjustments			Consolidated
Revenues
Service revenues	$	—		$	—		$	13,404		$	586		$	(91	)	$	13,899
Equipment sales	—			—			3,952			—			(500		)	3,452
Other revenues	—			—			200			116			(74		)	242
Total revenues	—			—			17,556			702			(665		)	17,593
Operating expenses
Network costs	—			—			3,907			46			(73		)	3,880
Cost of equipment sales	—			—			4,978			406			(547		)	4,837
Customer acquisition	—			—			2,804			—			—			2,804
General and administrative	—			—			2,409			118			(45		)	2,482
Depreciation and amortization	—			—			2,568			62			—			2,630
MetroPCS transaction and integration costs	—			—			51			—			—			51
Restructuring costs	—			—			54			—			—			54
Other, net	—			—			(2		)	—			—			(2		)
Total operating expenses	—			—			16,769			632			(665		)	16,736
Operating income	—			—			787			70			—			857
Other income (expense)
Interest expense to affiliates	—			(586		)	—			—			—			(586		)
Interest expense	—			(138		)	(44		)	(129		)	—			(311		)
Interest income	—			—			125			—			—			125
Other income, net	—			105			—			—			—			105
Total other income (expense), net	—			(619		)	81			(129		)	—			(667		)
Income (loss) before income taxes	—			(619		)	868			(59		)	—			190
Income tax expense (benefit)	—			—			158			(23		)	—			135
Earnings (loss) of subsidiaries	(83		)	674			(42		)	—			(549		)	—
Net income (loss)	(83		)	55			668			(36		)	(549		)	55
Other comprehensive income (loss), net of tax	—			(39		)	24			—			(24		)	(39		)
Total comprehensive income (loss)	$	(83	)	$	16		$	692		$	(36	)	$	(573	)	$	16

Condensed Consolidating Statement of Comprehensive Income (Loss) Information

Nine Months EndedSeptember 30, 2012

(in millions)	Parent		Issuer			Guarantor Subsidiaries			Non-Guarantor Subsidiaries		Consolidating and Eliminating Adjustments			Consolidated
Revenues
Service revenues	$	—	$	—		$	12,631		$	535	$	(80	)	$	13,086
Equipment sales	—		—			1,933			—		(409		)	1,524
Other revenues	—		—			253			52		(105		)	200
Total revenues	—		—			14,817			587		(594		)	14,810
Operating expenses
Network costs	—		—			3,568			52		(105		)	3,515
Cost of equipment sales	—		—			2,570			342		(456		)	2,456
Customer acquisition	—		—			2,323			—		—			2,323
General and administrative	—		—			2,600			114		(33		)	2,681
Depreciation and amortization	—		—			2,391			—		—			2,391
Impairment charges	—		—			8,134			—		—			8,134
Restructuring costs	—		—			90			—		—			90
Other, net	—		—			(136		)	—		—			(136		)
Total operating expenses	—		—			21,540			508		(594		)	21,454
Operating income (loss)	—		—			(6,723		)	79		—			(6,644		)
Other income (expense)
Interest expense to affiliates	—		(475		)	(12		)	—		—			(487		)
Interest income	—		—			53			—		—			53
Other income, net	—		16			6			—		—			22
Total other income (expense), net	—		(459		)	47			—		—			(412		)
Income (loss) before income taxes	—		(459		)	(6,676		)	79		—			(7,056		)
Income tax expense	—		—			244			28		—			272
Loss of subsidiaries	—		(6,869		)	—			—		6,869			—
Net income (loss)	—		(7,328		)	(6,920		)	51		6,869			(7,328		)
Other comprehensive income (loss), net of tax	—		19			(12		)	—		12			19
Total comprehensive income (loss)	$	—	$	(7,309	)	$	(6,932	)	$	51	$	6,881		$	(7,309	)

Condensed Consolidating Statement of Cash Flows Information

Nine Months EndedSeptember 30, 2013

(in millions)	Parent		Issuer			Guarantor Subsidiaries			Non-Guarantor Subsidiaries		Consolidating and Eliminating Adjustments		Consolidated
Operating activities
Net cash provided by (used in) operating activities	$	304	$	(921	)	$	3,130		$	28	$	—	$	2,541
Investing activities
Purchases of property and equipment	—		—			(3,143		)	—		—		(3,143		)
Purchases of intangible assets	—		—			(52		)	—		—		(52		)
Short term affiliate loan receivable, net	—		—			300			—		—		300
Cash and cash equivalents acquired in MetroPCS business combination	737		1,407			—			—		—		2,144
Change in restricted cash equivalents	—		—			(100		)	—		—		(100		)
Investments in unconsolidated affiliates, net	—		—			(22		)	—		—		(22		)
Other, net	—		—			5			—		—		5
Net cash provided by (used in) investing activities	737		1,407			(3,012		)	—		—		(868		)
Financing activities
Proceeds from issuance of long-term debt	—		498			—			—		—		498
Repayments of short-term debt for purchases of property and equipment	—		—			(194		)	—		—		(194		)
Repayments related to a variable interest entity	—		—			(80		)	—		—		(80		)
Distribution to affiliate as a result of debt recapitalization	—		—			(41		)	—		—		(41		)
Proceeds from exercise of stock options	116		—			—			—		—		116
Excess tax benefit from stock-based compensation	—		—			4			—		—		4
Other, net	—		—			(5		)	—		—		(5		)
Net cash provided by (used in) financing activities	116		498			(316		)	—		—		298
Change in cash and cash equivalents	1,157		984			(198		)	28		—		1,971
Cash and cash equivalents
Beginning of period	—		—			287			107		—		394
End of period	$	1,157	$	984		$	89		$	135	$	—	$	2,365

Condensed Consolidating Statement of Cash Flows Information

Nine Months EndedSeptember 30, 2012

(in millions)	Parent		Issuer		Guarantor Subsidiaries			Non-Guarantor Subsidiaries		Consolidating and Eliminating Adjustments		Consolidated
Operating activities
Net cash provided by operating activities	$	—	$	—	$	2,688		$	19	$	—	$	2,707
Investing activities
Purchases of property and equipment	—		—		(2,003		)	—		—		(2,003		)
Purchases of intangible assets	—		—		(379		)	—		—		(379		)
Short term affiliate loan receivable, net	—		—		(297		)	—		—		(297		)
Investments in unconsolidated affiliates, net	—		—		16			—		—		16
Other, net	—		—		(4		)	—		—		(4		)
Net cash used in investing activities	—		—		(2,667		)	—		—		(2,667		)
Financing activities
Net cash provided by financing activities	—		—		—			—		—		—
Change in cash and cash equivalents	—		—		21			19		—		40
Cash and cash equivalents
Beginning of period	—		—		339			51		—		390
End of period	$	—	$	—	$	360		$	70	$	—	$	430

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Stock-Based Compensation

9 Months Ended

Sep. 30, 2013

Disclosure of Compensation Related Costs, Share-based Payments [Abstract]

Stock-Based Compensation

Note 8 – Stock-Based Compensation

Stock Awards

During the second quarter of 2013, the Company’s Board of Directors and stockholders approved the 2013 Omnibus Incentive Plan, which authorized the issuance of up to 63 million shares of common stock. Under the incentive plan, the Company may grant stock options, stock appreciation rights, restricted stock, restricted stock units, and performance awards to employees, consultants, advisors and non-employee directors. As of September 30, 2013, there were 40 million shares of common stock available for future grants under the incentive plan.

Stock-based compensation expense and related income tax benefits for the stock awards were as follows:

(in millions)	Three Months Ended September 30, 2013		Nine Months Ended September 30, 2013
Stock-based compensation expense	$	48	$	54
Income tax benefit related to stock-based compensation	18		21

In June 2013, the Company granted restricted stock units (“RSUs”) to eligible employees and certain non-employee directors. RSUs entitle the grantee to receive shares of T-Mobile common stock at the end of a vesting period of one to four years.

In June 2013, the Company also granted performance stock units (“PSUs”) to eligible key executives of the Company. PSUs entitle the holder to receive shares of T-Mobile common stock at the end of a vesting period of approximately 2.5 years if certain performance goals are achieved. The number of shares ultimately received is dependent on T-Mobile's business performance against the specified performance goals. The PSUs were considered granted for accounting purposes upon specification of the performance goals in July 2013.

The following activity occurred under the RSU and PSU awards:

	Units		Weighted Average Grant-Date Fair Value
Nonvested, December 31, 2012	—		$	—
Granted	24,584,884		22.03
Vested	(17,866	)	21.20
Forfeited	(962,345	)	21.20
Nonvested, September 30, 2013	23,604,673		$	22.06

Vesting of the stock awards triggers a tax obligation for the employee, which is required to be remitted to the relevant tax authorities. The Company has agreed to withhold stock units from the employee to cover the tax obligation.  The net shares issued to the employee are accounted for as outstanding common stock.

As of September 30, 2013, total unrecognized stock-based compensation expense related to nonvested stock awards, net of estimated forfeitures, was $379 million, before income taxes, which is expected to be recognized over a weighted-average period of 2.5 years.

Stock Options

Prior to the business combination, MetroPCS had established the MetroPCS Communications, Inc. 2010 Equity Incentive Compensation Plan, the MetroPCS Communications, Inc. Amended and Restated 2004 Equity Incentive Compensation Plan and the Second Amended and Restated 1995 Stock Option Plan (“Predecessor Plans”). The MetroPCS stock options were adjusted in connection with the business combination. See Note 2 – Transaction with MetroPCS for further information. Following stockholder approval of the Company’s 2013 Omnibus Incentive Plan, no new awards may be granted under the Predecessor Plans.

For the period from May 1, 2013 through September 30, 2013, 8,358,830 stock options with a weighted-average exercise price of $13.92 were exercised under the Predecessor Plans, generating proceeds of approximately $116 million, net of tax. At September 30, 2013, 8,200,306 stock options with a weighted-average exercise price of $25.59 and weighted-average contractual life of 4 years remain outstanding and exercisable under the Predecessor Plans.

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Additional Financial Information (Earnings (Loss) Per Share) (Details) (USD $) In Millions, except Share data, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Earnings Per Share [Abstract]
Net income (loss)	$ (36)	$ (7,735)	$ 55	$ (7,328)
Weighted average shares outstanding - basic	726,877,458	535,286,077	642,957,645	535,286,077
Dilutive effect of outstanding stock options and awards	0	0	2,562,879	0
Weighted average shares outstanding - diluted	726,877,458	535,286,077	645,520,524	535,286,077
Earnings (loss) per share - basic	$ (0.05)	$ (14.45)	$ 0.09	$ (13.69)
Earnings (loss) per share - diluted	$ (0.05)	$ (14.45)	$ 0.09	$ (13.69)
Employee Stock Option [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount	8,200,306		4,484,084
Restricted Stock Units (RSUs) and Performance Stock Units (PSUs) [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount	24,928,415		2,765,055

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Consolidation and Basis of Presentation (Policies)

9 Months Ended

Sep. 30, 2013

Organization, Consolidation and Presentation of Financial Statements [Abstract]

Principles of Consolidation

The accompanying unaudited condensed consolidated financial statements include the balances and results of operations of T-Mobile US, Inc. and its consolidated subsidiaries, collectively “T-Mobile” or the “Company”. T-Mobile consolidates all majority-owned subsidiaries over which it exercises control, as well as variable interest entities where it is deemed to be the primary beneficiary and variable interest entities which cannot be deconsolidated. Intercompany transactions and balances have been eliminated in consolidation.

Basis of Presentation

The condensed consolidated financial statements fairly present the financial position and results of operations in accordance with accounting principles generally accepted in the United States of America (“GAAP”) and, in the opinion of management, reflect all adjustments of a normal recurring nature necessary for a fair presentation of the Company’s results for the periods presented. The condensed consolidated financial statements are unaudited and should be read in conjunction with the audited Consolidated Financial Statements for the three years ended December 31, 2012, included in the Current Report on Form 8-K filed on June 18, 2013.

Use of Estimates

The preparation of financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the amounts reported in the financial statements and accompanying notes, including estimates of probable losses and expenses. Actual results could differ from those estimates.

Business Combinations

On April 30, 2013, the business combination involving T-Mobile USA, Inc. (“T-Mobile USA”) and MetroPCS Communications, Inc. (“MetroPCS”) was completed. In connection with the business combination, MetroPCS acquired all of the outstanding capital stock of T-Mobile USA beneficially owned by Deutsche Telekom AG (“Deutsche Telekom”) in consideration for the issuance of shares of common stock representing approximately 74% of the fully diluted shares of the combined entity. MetroPCS was subsequently renamed T-Mobile US, Inc. and is the consolidated parent of the Company’s subsidiaries, including T-Mobile USA. The business combination was accounted for as a reverse acquisition with T-Mobile USA as the accounting acquirer. Accordingly, T-Mobile USA’s historical financial statements became the historical financial statements of the combined company. The common shares outstanding and earnings (loss) per share presented for periods up to April 30, 2013 reflect the common shares issued to T-Mobile Global Holding GmbH (“T-Mobile Holding”), an indirect wholly-owned subsidiary of Deutsche Telekom, in connection with the reverse acquisition. SeeNote 2 – Transaction with MetroPCS for further information.

Segments

Segments

T-Mobile operates as a single operating segment and a single reporting unit. As of September 30, 2013 and December 31, 2012, and for the three and nine months endedSeptember 30, 2013 and 2012, all of T-Mobile’s long-lived assets and revenues related to operations in the United States, Puerto Rico and the U.S. Virgin Islands.

Cash and Cash Equivalents

Cash and Cash Equivalents

Cash equivalents, including those acquired through the business combination with MetroPCS, consist of highly liquid interest-earning investments with remaining maturities of three months or less at the date of purchase. Cash equivalents are stated at cost, which approximates fair value.

T-Mobile is required to restrict cash equivalents as collateral for certain agreements. Cash equivalents with use restrictions of less than twelve months are classified as current. Restricted cash equivalents included in other current assets were $100 million as of September 30, 2013. There were no restricted cash equivalents as of December 31, 2012.

Goodwill

Goodwill

Goodwill consists of the excess of the purchase price over the fair value of net identifiable assets acquired in a business combination. The Company assesses the carrying value of its goodwill for potential impairment annually as of December 31 or more frequently if events or changes in circumstances indicate that such assets might be impaired. 

Other Intangible Assets

Other Intangible Assets

Intangible assets that have finite useful lives are amortized over their useful lives. Customer lists are primarily amortized using the sum-of-the-years-digits method over the expected period in which the relationship is expected to contribute to future cash flows. The remaining finite-lived intangible assets are generally amortized using the straight-line method.

Guarantee Liabilities

Guarantee Liabilities

T-Mobile offers a handset upgrade program that provides eligible customers a specified-price trade-in right to upgrade their handset, up to twice a year following completion of an initial six-month enrollment period. Participating customers must finance their handset using an equipment installment plan (“EIP”). Upon upgrading, the customer will receive a credit in the amount of the outstanding EIP balance provided they trade in their used handset to purchase a new handset from T-Mobile.

For customers who enroll in the trade-in programs, the Company defers the portion of equipment sales revenue which represents the estimated value of the specified-price trade-in right guarantee. The guarantee liabilities are valued based on various economic and customer behavioral assumptions, including the customer's estimated remaining EIP balance at trade-in, the expected fair value of the used handset at trade-in, and the trade-in probability for each month over the term of the EIP. The guarantee is recognized as equipment sales when the customer upgrades their handset or T-Mobile is otherwise relieved of its performance obligation. Guarantee liabilities included in other current liabilities were $90 million as of September 30, 2013. There were no guarantee liabilities as of December 31, 2012 as the program was introduced in the third quarter of 2013.

Stock-Based Compensation

Stock-Based Compensation

Stock-based compensation cost for stock awards, which include restricted stock units (“RSUs”) and performance stock units (“PSUs”), is measured at fair value on the grant date and recognized as expense, net of expected forfeitures, over the related service period. The fair value of stock awards is based on the closing price of T-Mobile common stock on the date of grant. RSUs are recognized as expense using the straight-line method. PSUs are recognized as expense following a graded vesting schedule.

Earnings (Loss) Per Share

Earnings (Loss) Per Share

Basic earnings (loss) per share is computed based on the weighted-average number of common shares outstanding for the period. Diluted earnings (loss) per share is computed based on the weighted-average number of common shares outstanding for the period plus the effect of dilutive potential common shares outstanding during the period, calculated using the treasury stock method. Dilutive potential common shares consist of outstanding stock options, RSU and PSU awards.

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Additional Financial Information

9 Months Ended

Sep. 30, 2013

Supplemental Financial Statement Elements [Abstract]

Additional Financial Information

Note 13 – Additional Financial Information

Supplemental Balance Sheet Information

Variable Interest Entities

CIVS VII was a joint venture funded by contributions from T-Mobile and Cook Inlet. CIVS VII was managed by Cook Inlet and owned spectrum licenses. T-Mobile utilized these spectrum licenses under certain operating agreements and compensated CIVS VII based on minutes of use. As T-Mobile was deemed to be the primary beneficiary, the results of CIVS VII were consolidated in the Company’s financial statements, which included $236 million in assets held by the joint venture as of December 31, 2012.

In conjunction with the joint venture agreement for CIVS VII, T-Mobile entered into an Exchange Rights Agreement with Cook Inlet. The existing agreement allowed Cook Inlet, with advance notice, to exchange its ownership interest in the joint venture for cash equal to the sum of Cook Inlet’s original contribution to the joint venture plus accrued interest. The exchange right did not meet the definition of a derivative instrument. The terms of the Exchange Rights Agreement were accounted for as a financing of T-Mobile’s purchase of Cook Inlet’s interest in the joint venture.

On February 28, 2013, Cook Inlet and T-Mobile entered into an Amended and Restated Exchange Rights Agreement in which T-Mobile agreed to pay Cook Inlet approximately $94 million in exchange for all of Cook Inlet’s interest in CIVS VII. On April 1, 2013, T-Mobile paid Cook Inlet $40 million as a down payment for its equity interest, and the parties filed for FCC regulatory approval of the contemplated equity transfer. On July 15, 2013, T-Mobile paid Cook Inlet $54 million for the remaining payment, which included $14 million for interest, in connection with the Amended Exchange Rights Agreement. T-Mobile purchased the remaining interest in CIVS VII from Cook Inlet, which resulted in CIVS VII becoming an indirect wholly-owned subsidiary of T-Mobile USA. CIVS VII was subsequently combined with, and net assets transferred to, T-Mobile License LLC, a wholly owned restricted subsidiary of T-Mobile USA. As a result the net assets of CIVS VII were subsequently included in the Guarantor Subsidiaries condensed consolidating balance sheet information. See Note 12 – Guarantor Financial Information for further information.

Accumulated Other Comprehensive Income

Prior to the closing of the business combination with MetroPCS, Deutsche Telekom recapitalized T-Mobile by retiring T-Mobile’s notes payable to affiliates principal balance and all related derivative instruments, which included the interest rate swaps and cross currency interest rate swaps.

The following table summarizes the changes in accumulated other comprehensive income (“AOCI”), net of tax, by component:

(in millions)	Cross Currency Interest Rate Swaps			Foreign Currency Translation			Available-for-Sale Securities		Total
Balance, December 31, 2012	$	(23	)	$	62		$	2	$	41
Unrealized gains (losses) arising during the period	(10		)	42			—		32
Reclassification adjustments recognized in net income	33			(104		)	—		(71		)
Net gain (loss) in other comprehensive income (loss)	23			(62		)	—		(39		)
Balance, September 30, 2013	$	—		$	—		$	2	$	2

The following table presents the effects on net income of amounts reclassified from AOCI (in millions):

		Amount Reclassified from AOCI to Income
AOCI Component	Location	Three Months Ended September 30, 2013		Nine Months Ended September 30, 2013
Cross Currency Interest Rate Swaps	Interest expense to affiliates	$	—	$	53
	Income tax effect	—		(20		)
	Net of tax	$	—	$	33
Foreign Currency Translation	Other income, net	$	—	$	(166	)
	Income tax effect	—		62
	Net of tax	$	—	$	(104	)
Total reclassifications, net of tax		$	—	$	(71	)

Supplemental Statements of Comprehensive Income (Loss) Information

Earnings (Loss) Per Share

The computation of basic and diluted earnings (loss) per share was as follows:

	Three Months Ended September 30,						Nine Months Ended September 30,
(in millions, except shares and per share amounts)	2013			2012			2013		2012
Basic and Diluted Earnings (Loss) Per Share:
Net income (loss)	$	(36	)	$	(7,735	)	$	55	$	(7,328	)
Weighted average shares outstanding - basic	726,877,458			535,286,077			642,957,645		535,286,077
Dilutive effect of outstanding stock options and awards	—			—			2,562,879		—
Weighted average shares outstanding - diluted	726,877,458			535,286,077			645,520,524		535,286,077
Earnings (loss) per share - basic	$	(0.05	)	$	(14.45	)	$	0.09	$	(13.69	)
Earnings (loss) per share - diluted	(0.05		)	(14.45		)	0.09		(13.69		)

Potentially dilutive securities were not included in the computation of diluted earnings (loss) per share for certain periods if to do so would have been antidilutive.  As the Company incurred a net loss for the three months endedSeptember 30, 2013, all outstanding stock options of 8,200,306 and unvested stock awards of 24,928,415 as of September 30, 2013 were excluded.  For the nine months endedSeptember 30, 2013, potentially dilutive outstanding stock options of 4,484,084 and unvested stock awards of 2,765,055 as of September 30, 2013 were excluded.  Unvested PSUs were based on the number of shares ultimately expected to vest based on T-Mobile’s business performance against the specified performance goals.

Restructuring Costs

In 2013, T-Mobile initiated a cost restructuring program in order to reduce its overall cost structure to align with its Un-carrier strategy and position T-Mobile for growth. Restructuring costs were $54 million for the nine months endedSeptember 30, 2013.

In 2012, T-Mobile consolidated its call center operations and restructured operations in other parts of the business to strengthen T-Mobile’s competiveness. Major costs incurred primarily related to lease buyout costs, severance payments and other personnel-related restructuring costs. Lease buyout costs included in accrued liabilities related to the 2012 restructuring program are being relieved over the remaining lease terms through 2022. Restructuring costs were $36 million and $90 million for the three and nine months endedSeptember 30, 2012, respectively.

Activities associated with T-Mobile’s restructuring plans and respective accrued liabilities were as follows:

(in millions)	2013 Restructuring Program			2012 Restructuring Program			Total Restructuring
Balance, December 31, 2012	$	—		$	32		$	32
Restructuring costs	54			—			54
Cash payments	(53		)	(9		)	(62		)
Balance, September 30, 2013	$	1		$	23		$	24

Supplemental Statements of Cash Flows Information

The following table summarizes T-Mobile’s supplemental cash flows information:

	Nine Months Ended September 30,
(in millions)	2013		2012
Interest and income tax payments:
Interest payments	$	784	$	644
Income tax payments (refunds), net	21		24
Noncash investing and financing activities:
Increase in accounts payable for purchases of property and equipment	53		233
Short-term debt outstanding for financing of property and equipment purchases	178		—
Relinquishment of accounts receivable from affiliates in satisfaction of notes payable to affiliates	—		644
Noncash portion of spectrum license swap transactions	8		1,452
Retirement of notes payable to affiliates	14,450		—
Elimination of net unamortized discounts and premiums on notes payable to affiliates	434		—
Issuance of new notes payable to affiliates	11,200		—
Settlement of accounts receivable from affiliates and other outstanding balances	363		—
Income tax benefit from debt recapitalization	178		—
Net assets acquired in MetroPCS business combination, excluding cash acquired	827		—

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Document and Entity Information	9 Months Ended
	Sep. 30, 2013	Oct. 31, 2013
Document and Entity Information [Abstract]
Entity Registrant Name	T-MOBILE US, INC.
Trading Symbol	TMUS
Entity Central Index Key	0001283699
Document Type	10-Q
Document Period End Date	Sep. 30, 2013
Amendment Flag	false
Document Fiscal Year Focus	2013
Document Fiscal Period Focus	Q3
Current Fiscal Year End Date	--12-31
Entity Filer Category	Large Accelerated Filer
Entity Common Stock, Shares Outstanding		728,696,706

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Subsequent Events

9 Months Ended

Sep. 30, 2013

Subsequent Events [Abstract]

Subsequent Events [Text Block]

Note 14 – Subsequent Events

Notes Payable to Affiliates

In October 2013, Deutsche Telekom sold an aggregate principal amount of $5.6 billion of the senior unsecured notes to third parties. This included $1.25 billion of 6.464% Senior Notes due 2019, $1.25 billion of 6.542% Senior Notes due 2020, $1.25 billion of 6.633% Senior Notes due 2021, $1.25 billion of 6.731% Senior Notes due 2022, and $600 million of 6.836% Senior Notes due 2023. The terms and guarantees of these notes were unchanged and T-Mobile did not receive any proceeds from the sale of these notes. Beginning October 2013, these notes will be reclassified from notes payable to affiliates to long-term debt.

Spectrum Acquisition

In October 2013, T-Mobile paid U.S. Cellular $308 million in connection with the purchase agreement described in Note 11 – Commitments and Contingencies, at which time T-Mobile acquired the AWS spectrum from U.S. Cellular.

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Commitments and Contingencies (Other Commitments) (Details) (USD $) In Millions, unless otherwise specified	9 Months Ended
	Sep. 30, 2013
Spectrum License Agreement Purchase Commitment [Member]
Other Commitments [Line Items]
Purchase obligation	$ 308
Non-Dedicated Transportation Lines [Member]
Twelve months ending September 30,
2014	604
2015	583
2016	533
2017	443
2018	179
Thereafter	164
Total future minimum payments	2,506
Other Purchase Commitments [Member]
Twelve months ending September 30,
2014	1,352
2015	260
2016	166
2017	2,335
2018	58
Thereafter	0
Total future minimum payments	$ 4,171
Minimum [Member]
Other Commitments [Line Items]
Other commitments, time period	5 years
Maximum [Member]
Other Commitments [Line Items]
Other commitments, time period	10 years

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Commitments and Contingencies (Operating Leases) (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Cell Sites [Member]
Operating Leased Assets [Line Items]
Lessee leasing arrangements, operating leases, renewal term			5 years
Lessee leasing arrangements, operating leases, term of contract			15 years
Dedicated Transportation Lines [Member]
Twelve months ending September 30,
2014	$ 248		$ 248
2015	161		161
2016	79		79
2017	44		44
2018	19		19
Thereafter	5		5
Total future minimum payments	556		556
Rental expense	148	129	414	420
Other Operating Leases [Member]
Twelve months ending September 30,
2014	1,953		1,953
2015	1,921		1,921
2016	1,866		1,866
2017	1,784		1,784
2018	1,622		1,622
Thereafter	5,561		5,561
Total future minimum payments	14,707		14,707
Rental expense	562	482	1,600	1,400
Minimum [Member] | Cell Sites [Member]
Operating Leased Assets [Line Items]
Lessee leasing arrangements, operating leases, initial term of contract			5 years
Maximum [Member] | Cell Sites [Member]
Operating Leased Assets [Line Items]
Lessee leasing arrangements, operating leases, initial term of contract			10 years
Ground Lease Payment Obligation [Member]
Twelve months ending September 30,
Loss contingency, lease payments	$ 677		$ 677