Exhibit 99.1

USA MOBILITY, INC. UNAUDITED PRO FORMA
CONDENSED CONSOLIDATED FINANCIAL STATEMENTS

The following unaudited pro forma condensed consolidated financial statements have been prepared to give effect to the merger of Arch Wireless, Inc. and Metrocall Holdings, Inc. Pursuant to the terms of the merger agreement, Patriots Acquisition Sub, Inc. and Wizards Acquisition Sub, Inc, two wholly owned subsidiaries of USA Mobility, Inc. (USA Mobility) merged with and into Arch and Metrocall, respectively. Prior to the effective date of the merger, USA Mobility had no operations and was formed specifically to facilitate the merger transaction. Under the terms of the merger agreement, holders of Arch common stock received one share of USA Mobility common stock for each common share held of Arch Wireless. Holders of Metrocall common stock received consideration totaling $150 million of cash and 7,560,515 shares of USA Mobility common stock assuming 1.876 USA Mobility shares will be exchanged for each Metrocall share not subject to the cash election and assuming the shares which have requested appraisal rights will receive stock since it is unknown whether these rights will be perfected (see note 13). Assuming the exchange of shares occurs as described, former Arch and Metrocall common shareholders will hold approximately 72.5% and 27.5%, respectively, of USA Mobility’s common stock on a fully diluted basis.

These pro forma financial statements do not purport to be indicative of the consolidated financial position or results of operations for future periods or the results that actually would have been realized had the merger occurred on the dates specified in these pro forma financial statements.

The merger will be accounted for under the purchase method of accounting pursuant to Statement of Financial Accounting Standard (SFAS) No. 141, Business Combinations. Arch Wireless, Inc. has been deemed the “accounting acquirer” as a result of its former shareholders holding a majority of the common stock of USA Mobility following the merger and Arch representatives holding five of nine board of director positions of the combined company. Accordingly, the basis of Arch’s assets and liabilities as of the acquisition date will be reflected on the balance sheet of USA Mobility at their historical basis. Amounts allocated to Metrocall’s assets and liabilities will be based upon the total purchase price and the estimated fair value of such assets and liabilities on the effective date of the merger. The purchase price allocations reflected in the accompanying pro forma condensed consolidated balance sheet were made based upon preliminary estimates and assumptions. The actual amount and allocation of purchase price may differ significantly from the pro forma amounts included herein.

The unaudited pro forma condensed consolidated financial statements, including the notes thereto, are qualified in their entirety by reference to, and should be read in conjunction with the historical consolidated financial statements and the notes thereto of Arch and Metrocall either included elsewhere herein or incorporated by reference.

The unaudited pro forma condensed consolidated balance sheet was prepared as if the merger occurred on September 30, 2004. The unaudited pro forma condensed consolidated statements of operations for the year ended December 31, 2003 and for the nine months ended September 30, 2004 were prepared as if the merger occurred on January 1, 2003. To prepare the pro forma condensed consolidated statements of operations for the year ended December 31, 2003, Metrocall’s historical statement of operations for the year ended December 31, 2003 was combined on a pro forma basis with the historical statement of operations of WebLink Wireless for the period January 1, 2003 to November 17, 2003, as if Metrocall had acquired WebLink on January 1, 2003. Metrocall’s historical statement of operations includes the results of operations of WebLink for the period November 18 to December 31, 2003.

USA Mobility, Inc.

Unaudited Pro Forma
Condensed Consolidated Balance Sheet
September 30, 2004

(Dollars in thousands)

						Pro Forma Adjustments
	Arch			Metrocall										USA Mobility
	(Historical)			(Historical)		Debit				Credit				(Pro Forma)
CURRENT ASSETS
Cash and cash equivalents	$	45,292		$	39,434					$	10,000	(1	)	$	74,726
Accounts receivable		20,987			23,516										44,503
Deposits		3,122			1,298										4,420
Prepaid rent		489			305										794
Prepaid expenses and other current assets		13,381			1,472										14,853
Deferred tax assets, net of allowance		22,226			2,782					$	2,782	(2	)		22,226
Total current assets		105,497			68,807						12,782				161,522
Property and equipment, net		150,840			49,365	$	35,000	(1	)						235,205
Intangible assets, net		—			2,129		267,752	(1	)		2,129	(2	)		284,501
							16,749	(4	)
Deferred tax assets, net of allowance		191,395			39,644						39,644	(2	)		191,395
Other assets		1,325			4,931						—				6,256
TOTAL ASSETS	$	449,057		$	164,876	$	319,501			$	54,555			$	878,879
LIABILITIES AND STOCKHOLDERS’ EQUITY
CURRENT LIABILITIES
Current maturities of other long-term debt	$	—		$	70									$	70
Accounts payable		11,580			8,290										19,870
Accrued compensation and benefits		9,850			7,843					$	2,934	(5	)		20,627
Accrued expenses and other current liabilities		16,376			13,359						10,000	(1	)		39,735
Accrued restructuring charges		5,541			—										5,541
Deferred revenues and subscriber deposits		25,352			12,687										38,039
Total current liabilities		68,699			42,249						12,934				123,882
Long-term debt, less current maturities		—			13						140,000	(1	)		140,013
Other long-term liabilities		8,203			3,943						16,749	(4	)		28,895
Total liabilities		76,902			46,205						169,683				292,790
STOCKHOLDERS’ EQUITY
Common stock		2			56	$	56				1	(1	)		3
Additional paid-in capital		344,876			85,114		85,114	(3	)		216,867	(1	)		558,631
							3,112	(6	)
Treasury stock		(3,112	)		—						3,112	(6	)		—
Unearned compensation		(1,644	)		—										(1,644	)
Retained earnings		32,033			33,501						11,054	(3	)		29,099
							44,555	(2	)
							2,934	(5	)
Total stockholders’ equity		372,155			118,671		135,771				231,034				586,089
TOTAL LIABILITIES AND STOCKHOLDERS’ EQUITY	$	449,057		$	164,876	$	135,771			$	400,717			$	878,879

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

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USA Mobility, Inc.
UNAUDITED PRO FORMA CONDENSED CONSOLIDATED
STATEMENTS OF OPERATIONS
For the Nine Months Ended September 30, 2004

(Dollars in thousands, except share and per share amounts)

	Arch			Metrocall			Pro Forma					USA Mobility
	(Historical)			(Historical)			Adjustments					Pro Forma
REVENUES
Service, rental and maintenance	$	335,505		$	247,219							$	582,724
Product sales		13,368			12,673								26,041
		348,873			259,892								608,765
OPERATING EXPENSES
Cost of products sold		2,485			3,716								6,201
Service, rent and maintenance		112,880			82,223								195,103
Selling and marketing		25,687			25,806								51,493
General and administrative		87,523			76,117		$	(7,184	)	(11	)		156,456
Depreciation and amortization		79,682			24,747			50,843		(7	)		130,525
								(24,747	)	(7	)
Stock based and other compensation		8,541			2,579								11,120
Restructuring expenses		3,018			—								3,018
		319,816			215,188			18,912					553,916
Income from operations		29,057			44,704			(18,912	)				54,849
Interest expense		(4,958	)		(407	)		(6,300	)	(8	)		(6,707	)
								4,958		(8	)
Interest expense — Dividends and accretion of series A preferred		—			(4,479	)		4,479		(8	)		—
Other income (expense)		411			(83	)							328
Income before income tax expense		24,510			39,735			(15,775	)				48,470
Income tax expense		(9,852	)		(19,257	)		9,624		(12	)		(19,485	)
Net income (loss)	$	14,658		$	20,478		$	(6,151	)			$	28,985
Basic net income (loss) per common share	$	0.73										$	1.09
Diluted net income (loss) per common share	$	0.73										$	1.06
Basic weighted-average common shares outstanding		19,967,708						6,739,127					26,522,605
								(184,230	)	(10	)
Diluted weighted-average common shares outstanding		20,091,801						7,560,515					27,468,086
								(184,230	)	(10	)

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

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USA Mobility, Inc.
UNAUDITED PRO FORMA CONDENSED CONSOLIDATED
STATEMENTS OF OPERATIONS
For the Twelve Months Ended December 31, 2003

(Dollars in thousands, except share and per share amounts)

	Arch			Metrocall			Pro Forma					USA Mobility
	(Historical)			(Pro Forma)			Adjustments					Pro Forma
Revenues	$	597,478		$	417,940							$	1,015,418
OPERATING EXPENSES
Cost of products sold		5,580			9,465								15,045
Service, rent and maintenance		192,159			132,042								324,201
Selling and marketing		45,639			45,953								91,592
General and administrative		166,167			112,736		$	(600	)	(11	)		278,303
Depreciation and amortization		118,917			41,188			101,915		(7	)		220,832
								(41,188	)	(7	)
Stock based and other compensation		11,420			1,725								13,145
Restructuring expenses		11,481			7,907								19,388
		551,363			351,016			60,127					962,506
Income from operations		46,115			66,924			(60,127	)				52,912
Interest expense		(19,788	)		(4,944	)		(8,400	)	(8	)		(9,861	)
								23,271		(8	)
Interest expense — Dividends and accretion of series A preferred		—			(12,428	)		12,428		(8	)		—
Interest income		551			—								551
Other income (expense)		516			286								802
Income before reorganization items, net		27,394			49,838			(32,828	)				44,404
Reorganization items, net		(425	)		—								(425	)
Income before income tax expense		26,969			49,838			(32,828	)				43,979
Income tax expense		(10,841	)		(26,140	)		19,301		(12	)		(17,680	)
Net income (loss)	$	16,128		$	23,698		$	(13,527	)			$	26,299
Basic net income (loss) per common share	$	0.81										$	0.99
Diluted net income (loss) per common share	$	0.81										$	0.96
Basic weighted-average common shares outstanding		20,000,000						6,739,127					26,554,897
								(184,230	)	(10	)
Diluted weighted-average common shares outstanding		20,034,476						7,560,515					27,410,761
								(184,230	)	(10	)

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

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NOTES TO UNAUDITED PRO FORMA CONDENSED
CONSOLIDATED FINANCIAL STATEMENTS

(Dollars in thousands)

(1)

To record the issuance of 7,560,515 shares of $0.0001 par value USA Mobility common stock valued at $28.68 per share and $150 million of cash in exchange for all of the outstanding common stock and stock equivalents of Metrocall Holdings, Inc. The per share price was calculated by taking the average of the closing stock price of Arch common stock for the seven day period beginning three days before and ending three days after March 29, 2004, the date the merger was publicly announced. The value of Arch common stock was utilized in the purchase price calculation since Arch was deemed the “accounting acquirer”, its exchange ratio is 1 to 1 and it carries similar transfer restrictions to those of USA Mobility common stock. The amount of debt incurred to partially finance the cash election and other closing costs was $140 million.

The provisions of SFAS No. 141 require the purchase price to be allocated to the tangible and intangible assets acquired and liabilities assumed based upon their estimated fair values as of the consummation date. The allocation below is based on management estimates. The actual allocation may differ significantly from the pro forma amounts included below. The preliminary calculation of the purchase price, excess of purchase price over the fair value of identifiable assets acquired and the allocation of purchase price are as follows (in thousands):

Consideration Exchanged:
Fair value of shares issued to Metrocall stockholders —	$	216,868
7,560,515 shares at $28.68 per share)
Cash election payments		150,000
Transaction costs		10,000	(a)
Liabilities Assumed:
Capital leases and other long-term obligations		83
Accounts payable		8,290
Accrued expenses		21,202
Customer deposits and deferred revenue		12,687
Other liabilities		3,943
Total purchase price		423,073
Less estimated fair value of identifiable assets acquired:
Cash and cash equivalents		39,434
Accounts receivable, net		23,516
Prepaid expenses and other current assets		3,075
Property and equipment, net		84,365	(b)
Other assets		4,931
Intangible assets		267,752	(c)
	$	423,073

(a)

Primarily includes investment banking, legal, accounting and other costs, which are currently known or have been incurred. This amount may increase as additional legal, accounting, printing, financing and other costs are incurred.

(b)

The fair value of property and equipment has been estimated by management based upon historical book values and the results of valuations, adjusted by management to reflect the passage of time since the valuation was prepared, performed for the purposes of Metrocall’s fresh-start accounting and its purchase of the WebLink assets. Management believes the amounts approximate fair value, however they are preliminary and may change upon preparation of the third-party valuation that will be utilized in the final purchase price allocation.

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(c)	Intangible assets consist primarily of assets related to customer relationships of approximately $220,000, FCC licenses of $2,300 and goodwill of $45,452. Assets representing customer relationships and FCC licenses will be amortized over their expected useful lives of 3 and 5 years, respectively. Goodwill will not be amortized. The estimated fair value of customer relationships was based upon preliminary studies undertaken by management. The estimated fair value of FCC licenses was based on recent valuations and other studies recently performed. The estimated value allocated to goodwill was based on the residual of the preliminary purchase price over the preliminary fair values of the identifiable tangible and intangible assets.
	If it is later determined that the fair values of property and equipment, customer relationships or FCC licenses is less than included above or the consideration exchanged is less than determined above or other intangible assets are identified, the purchase price allocations could be significantly different than stated above and any such difference could result in higher or lower amortization expense than what is reflected on the pro forma statements of operations (see note 7). Further, if the purchase price exceeds the fair value of the identifiable tangible and intangible assets, any such excess will be classified as excess of purchase price over the fair value of the identifiable tangible and intangible assets and that balance would not be amortizable, which may result in less amortization expense in future periods.
(2)	To write-off Metrocall intangible and deferred income tax balances.
(3)	To eliminate the Metrocall equity balances.

Common stock	$	56
Additional paid-in capital	$	85,114
Metrocall retained earnings at September 30, 2004	$	33,501
Less: write-off of intangibles and deferred tax assets.		(44,555	)
Adjustment to eliminate remaining retained earnings	$	(11,054	)

(4)	To record the deferred tax liability and the associated intangible asset resulting from the excess of purchase price over tax bases of the net assets acquired. As discussed above, the purchase price calculation and allocation are preliminary. SFAS No. 109, Accounting for Income Taxes, requires a deferred tax liability be recorded if the fair value of the net assets acquired exceeds the tax bases of those assets excluding any fair value allocated to goodwill (excess of purchase price over the fair value of identified assets). The amount recorded assumes the identifiable intangible assets referred to in note 1 are not goodwill and are amortizable for tax purposes. If it is later determined that the allocation of purchase price results in less intangibles and the recognition of goodwill or if the identified intangibles are not amortizable for tax purposes, that balance of the assets would be reduced or removed from the deferred tax assessment and would likely result in the recording of a lower deferred tax liability.
(5)	To record a restructuring charge in accordance with SFAS No. 146, Accounting for Costs Associated with Exit or Disposal Activities, related to severance expense for certain Arch management personnel.
(6)	To eliminate Arch treasury stock that will be canceled as a result of the merger transaction.
(7)	To remove depreciation and amortization expense related to the Metrocall tangible and intangible assets and to record depreciation and amortization expense for the tangible and intangible assets referred to above on a straight-line basis. Depreciation and amortization expense was calculated assuming a three-year average estimated useful life for customer relationships and a five-year estimated useful life for FCC licenses. The three-year estimated useful life assumed to calculate the amortization expense reflected in the pro forma statements of operations for the customer relationship asset is consistent with current practices of both Arch and Metrocall, however, the underlying characteristics of the customer relationship asset may differ from past experience which may result in a longer or shorter estimated useful life. The estimated useful life assigned to FCC licenses is consistent with Arch’s historical accounting policy. As discussed above, the amount, classification and estimated useful lives of the tangible and intangible assets are preliminary and based on management estimates. If any of these estimates change, the amount of depreciation and amortization expense could change materially.

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(8)

To remove the historical Arch and Metrocall interest expenses associated with notes and preferred stock since the merger agreement requires both companies to fully redeem all of their debt prior to consummation of the merger and to record interest expense associated with the borrowings to finance the Metrocall cash election consideration. Interest expense was calculated using an assumed 6% rate on $140 million of borrowings resulting in $8.4 million and $6.3 million for the year ended December 31, 2003 and the nine months ended September 30, 2004, respectively.

Interest expense on these borrowings would be as follows if interest rates were to increase or decrease by 1/8 of a percent (in thousands):

	Year Ended		Nine Months Ended
Assumed Change In Rate	December 31, 2003		September 30, 2004
Increase of 1/8%	$	8,575	$	4,288
Decrease of 1/8%	$	8,225	$	4,113

(9)	Arch has a long-term incentive plan for which compensation expense is recognized ratably over a 38 month service period which commenced on January 1, 2003. At September 30, 2004, other long-term liabilities includes $7.0 million related to this plan which represents the obligations due to plan participants as of the balance sheet date. In the event there is a “change in control” of Arch, as defined in the plan document, vesting would accelerate and result in an additional liability of $5.8 million. The boards of directors of Arch and Metrocall have determined the merger does not constitute a change in control of Arch, therefore this additional amount has not been reflected in these pro forma financial statements. The liability at September 30, 2004 was valued at $29.25 per share, determined in accordance with the plan. The incentive payable in accordance with this plan is directly attributable to the performance of USA Mobility’s common stock. An increase or decrease of one dollar in the per share price of USA Mobility’s common stock will result in increases or decreases of up to $437,000 for each dollar fluctuation in the total amount payable in accordance with this plan.
(10)	To reduce the outstanding number of shares by 184,230 shares of Arch stock which were repurchased prior to consummation of the merger and subsequently cancelled. These shares were not contemplated to be exchanged by the merger agreement.
(11)	To eliminate legal, accounting and other expenses directly related to the merger incurred and expensed by Metrocall. Metrocall expensed these costs since Arch has been deemed the accounting acquirer.
(12)	To adjust income tax expense to the anticipated effective rate of approximately 40%.
(13)	In conjunction with the merger, stockholders of Metrocall holding approximately 8.04% of the total Metrocall shares outstanding on a fully-diluted basis gave notice of their intent to exercise their rights of appraisal as provided by Delaware law. Metrocall stockholders who comply with the requirements of Section 262 of the Delaware General Corporation Law to perfect appraisal rights would receive the appraised value of their shares as determined by the Delaware Court of Chancery following a hearing on a petition filed by such stockholder and we would reduce the number of shares issued in the merger. Any Metrocall stockholder who asserts their appraisal rights but does not properly complete the steps for perfecting those rights as to any of its shares, would receive as to such shares the common stock of USA Mobility as provided in the merger agreement, but will not be entitled to receive any cash consideration contemplated under the cash election.
	As discussed above, if the stockholders perfect their appraisal rights, the final appraised amount will be determined in accordance with Delaware law and the amount eventually paid could be higher or lower than the amount of consideration proposed in the merger agreement and the difference could be material.

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METROCALL HOLDINGS, INC. — WEBLINK ACQUIRED ASSETS

UNAUDITED PRO FORMA CONDENSED CONSOLIDATED
STATEMENT OF OPERATIONS

     On November 18, 2003, Metrocall acquired certain assets and assumed certain of the liabilities of WebLink Wireless, Inc. and certain of its subsidiaries (“the WebLink Acquired Assets”) pursuant to an Asset Purchase Agreement. Metrocall and WebLink have entered into a Management and Spectrum Lease Agreement under which WebLink provided certain services and lease to Metrocall the spectrum usage rights granted under FCC licenses until the FCC’s approval of the transfer of such licenses to Metrocall on June 14, 2004. Please refer to Metrocall’s Annual Report on Form 10-K for the year ended December 31, 2003 for additional information, which is incorporated herein by reference.

     The following unaudited pro forma condensed consolidated statement of operations has been prepared to give effect to Metrocall’s acquisition of the WebLink Acquired Assets as if the transaction occurred on January 1, 2003, the beginning of Metrocall’s fiscal year. These pro forma financial statements do not purport to be indicative of the consolidated results of operations for future periods or the results that actually would have been realized had the acquired assets been consolidated during the specified period. A pro forma condensed consolidated balance sheet has not been presented as the WebLink Acquired Assets were included in Metrocall’s historical consolidated balance sheet as of June 30, 2004. Please refer to Amendment No. 1 to Metrocall’s Quarterly Report on Form 10-Q for the six months ended June 30, 2004, which is incorporated herein by reference.

     To prepare the pro forma statement of operations, Metrocall’s statement of operations for the year ended December 31, 2003, which included the results of operations of the WebLink Acquired Assets for the period November 18, 2003 to December 31, 2003, was combined with WebLink’s unaudited statements of operations for the period January 1, 2003 to April 22, 2003 and for the period April 23, 2003 to November 17, 2003.

     The unaudited pro forma condensed consolidated statement of operations including the notes thereto, are qualified in their entirety by reference to, and should be read in conjunction with the historical consolidated financial statements and the notes thereto of Metrocall which were previously reported in Metrocall’s Annual Report on Form 10-K for the year ended December 31, 2003, which is incorporated herein by reference.

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METROCALL HOLDINGS, INC. — WEBLINK ACQUIRED ASSETS

UNAUDITED PRO FORMA CONDENSED CONSOLIDATED
STATEMENT OF OPERATIONS

For the Year Ended December 31, 2003

(Dollars in thousands)

				WebLink Acquired Assets
				January 1			April 23 to
	Metrocall			to April 22,			November 17,						Pro Forma			Metrocall
	Historical			2003			2003			Total			Adjustments			Pro Forma
Revenues	$	336,859		$	36,592		$	57,892		$	94,484		$	(13,403	)(1)	$	417,940
OPERATING EXPENSES
Costs of good sold		4,804			2,056			2,605			4,661						9,465
Service, rent and maintenance		94,098			18,968			32,379			51,347			(13,403	)(1)		132,042
Selling and marketing		40,025			2,532			3,396			5,928						45,953
General and administrative		93,663			7,668			11,405			19,073						112,736
Restructuring expenses		6,842			337			728			1,065						7,907
Stock-based compensation		1,725			—			—			—						1,725
Depreciation and amortization		37,913			4,508			1,176			5,684			(2,409	)(2)		41,188
		279,070			36,069			51,689			87,758			(15,812	)		351,016
Income from operations		57,789			523			6,203			6,726			2,409			66,924
Interest expense		(7,099	)		(865	)		(3,511	)		(4,376	)		2,155	(3)		(4,944	)
														4,376
Interest expense dividends and accretion of series A preferred		(12,428	)		—			—			—						(12,428	)
Loss on early extinguishment of debt		—			—			(8,214	)		(8,214	)		8,214	(4)		—
Interest and other income (expense)		463			106			(283	)		(177	)					286
Income (loss) before income taxes		38,725			(236	)		(5,805	)		(6,041	)		17,154			49,838
Income tax provision		(21,754	)		—			—						(4,386	)(5)		(26,140	)
Net income (loss)	$	16,971		$	(236	)	$	(5,805	)	$	(6,041	)	$	12,768		$	23,698

The accompanying notes are an integral part of this unaudited pro forma condensed consolidated statement of operations.

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METROCALL HOLDINGS, INC. — WEBLINK ACQUIRED ASSETS

NOTES TO THE UNAUDITED PRO FORMA STATEMENT OF OPERATIONS
(Dollars in thousands)

(1)	Represents the elimination of revenues recorded by WebLink and expenses incurred by Metrocall for airtime services provided to Metrocall by WebLink under various operating arrangements.
(2)	Represents the adjustment required to reduce WebLink’s historical depreciation and amortization expenses to the expense that Metrocall would have recognized for the period had the transaction occurred on January 1, 2003. Purchase consideration allocated to fixed assets are being depreciated over the average useful lives of the various fixed assets acquired consistent with Metrocall’s long-lived asset accounting policies. Amounts allocated to intangible assets with definite useful lives are being amortized over such useful lives estimated to be a 3 year period for customer contracts and a 5 year period for trademarks and names. Amounts allocated to intangible assets with an indefinite life such as FCC licenses are not amortized but tested for impairment on an annual basis or more frequently if changes in circumstances indicate that the asset might be impaired. Please refer to the notes to the consolidated financial statements included in Metrocall’s Annual Report on Form 10-K for the year ended December 31, 2003.
(3)	Represents the elimination of historical interest expenses of WebLink as no long-term debt was acquired in the transaction and the elimination of accretion related to accrued long-term engineering charges that had been reflected on Metrocall’s balance sheet as of the acquisition date. This obligation was eliminated as a result of the transaction.
(4)	Represents the elimination of historical losses on early extinguishment of debt of WebLink as no long-term debt was acquired in the transaction.
(5)	Represents additional income tax expense based on the results of the acquired assets for the period at Metrocall’s statutory tax rates.

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