Exhibit 5.2

900 West 48th Place, Suite 900, Kansas City, Missouri, 64112 ☐ 816.753.1000

September 12, 2022

Board of Directors

T-Mobile US, Inc.

12920 SE 38th Street

Bellevue, Washington 98006

Ladies and Gentlemen:

We have acted as special local counsel to those certain subsidiaries of T-Mobile US, Inc., a Delaware corporation (the “Parent”), listed on Schedule A hereto (the “Opinion Guarantors”) in connection with the filing by the Parent, T-Mobile USA, Inc., a Delaware corporation (“T-Mobile”), and certain subsidiaries of T-Mobile (including the Opinion Guarantors) of Post-Effective Amendment No. 2 (the “2022 Amendment”) to the Registration Statement on Form S-3ASR (File No. 333-249079) (as heretofore amended, including by the 2022 Amendment, the “Registration Statement”), with the Securities and Exchange Commission pursuant to the Securities Act of 1933, as amended (the “Securities Act”). The 2022 Amendment relates to the proposed public offering of an indeterminate amount of one or more series of the following securities: (i) debt securities of T-Mobile (the “New Primary Debt Securities”), which may be issued from time to time pursuant to an indenture by and among T-Mobile, the Parent and Deutsche Bank Trust Company Americas, as trustee, the form of which is filed as Exhibit 4.14 to the 2022 Amendment (the “New Base Indenture”); and (ii) guarantees of the New Primary Debt Securities (the “New Primary Guarantees”) by one or more of the Parent and T-Mobile’s subsidiary guarantors, including the Opinion Guarantors, registered under the Registration Statement (the “Guarantors”), all of which may be sold from time to time and on a delayed basis, as set forth in the primary offering prospectus which forms a part of the Registration Statement (the “Base Prospectus”), and as to be set forth in one or more supplements to the Base Prospectus (each, a “Prospectus Supplement”). This opinion letter is furnished to you at your request to enable you to fulfill the requirements of Item 601(b)(5) of Regulation S-K, 17 C.F.R. § 229.601(b)(5), in connection with the Registration Statement.

For purposes of this opinion letter, we have examined copies of such agreements, instruments and documents as we have deemed an appropriate basis on which to render the opinions hereinafter expressed. In our examination of the aforesaid documents, we have assumed the genuineness of all signatures, the accuracy and completeness of all documents submitted to us, the authenticity of all original documents, and the conformity to authentic original documents of all documents submitted to us as copies (including electronic copies). We have also assumed the legal capacity for all purposes relevant hereto of all natural persons and, with respect to all parties to agreements or instruments relevant hereto other than the Opinion Guarantors, that such parties had the requisite power and authority (corporate or otherwise) to execute, deliver and perform such agreements or instruments, that such parties have duly authorized such agreements or instruments by all requisite action (corporate or otherwise), that such agreements or instruments have been duly executed and delivered by such parties and that such agreements or instruments are the valid, binding and enforceable obligations of all parties thereto. As to all matters of fact, we have relied on the representations and statements of fact made in the documents so reviewed, including all statements in certificates of public officials and officers of the Opinion Guarantors that we reviewed, and we have not independently established the facts so relied on. This opinion letter is given, and all statements herein are made, in the context of the foregoing.

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Polsinelli PC, Polsinelli LLP in California

For purposes of this opinion letter, we have assumed that (i) the offering, issuance, sale, execution, delivery and definitive terms of any New Primary Guarantees of the Opinion Guarantors to be offered from time to time will have been duly authorized and established by proper action of the board of directors, or the sole member, as the case may be, of each of the Opinion Guarantors (the “Future Authorization”) consistent with the procedures and terms described in the Registration Statement and in accordance with each Opinion Guarantor’s (a) certificate of incorporation, articles of incorporation, certificate of formation, articles of organization, or equivalent formation document, and (b) bylaws, limited liability company agreement or equivalent governing document, and, for each Opinion Guarantor, the law applicable to corporations or limited liability companies, as the case may be, of such Opinion Guarantor’s state of incorporation or organization, as the case may be, designated on Schedule A hereto (the “Opinion Jurisdiction”), in a manner that does not violate any law, government or court-imposed order or restriction or agreement or instrument then binding on each Opinion Guarantor or otherwise impair the legal or binding nature of the obligations represented by the New Primary Guarantees; (ii) at the time of offer, issuance, sale, execution and delivery of any New Primary Guarantees, the 2022 Amendment and any subsequent amendments to the Registration Statement (including any post-effective amendments) will have become effective under the Securities Act, and no stop order suspending its effectiveness will have been issued and remain in effect; (iii) any documentation creating or evidencing the New Primary Guarantees will be executed by a duly authorized officer of each Opinion Guarantor; (iv) any documentation creating or evidencing the New Primary Guarantees will be executed and delivered by the parties thereto as contemplated by the New Base Indenture and, as applicable, any supplemental indenture, and in accordance with the terms of the applicable Future Authorization and the applicable underwriting agreement or purchase agreement and as contemplated by the Registration Statement and/or the applicable Prospectus Supplement; (v) the Parent will receive lawful consideration for the New Primary Debt Securities and related New Primary Guarantees; and (vi) each Opinion Guarantor will remain validly existing under the laws of its Opinion Jurisdiction.

This opinion letter is based as to matters of law solely on the applicable provisions of the laws of the State of Georgia, the State of Kansas, the State of Nevada, the State of Texas and the Commonwealth of Virginia (but not including any laws, statutes, ordinances, administrative decisions, rules or regulations of any political subdivision below the state level), as currently in effect. We express no opinion herein as to any other statutes, rules or regulations (and in particular, we express no opinion as to any effect that such other statutes, rules or regulations may have on the opinions expressed herein).

Based upon, subject to and limited by the foregoing, we are of the opinion that:

1.    Each Opinion Guarantor is validly existing as a corporation or limited liability company, as applicable, under the laws of its Opinion Jurisdiction.

2.    Each Opinion Guarantor has the corporate or limited liability company power, as applicable, under the laws of its Opinion Jurisdiction to issue the New Primary Guarantees.

This opinion letter has been prepared for use in connection with the 2022 Amendment. Please note that we are opining only as to matters set forth herein, and no opinion should be inferred as to any other matters. This opinion letter is given only as of the time of its delivery, and we assume no obligation or responsibility to update or supplement this opinion letter after its delivery.

We hereby consent to the filing of this opinion letter as Exhibit 5.2 to the 2022 Amendment and to the reference to this firm under the caption “Legal Matters” in the Base Prospectus. In giving this consent, we do not thereby admit that we are an “expert” within the meaning of the Securities Act.

Very truly yours,

/s/ Polsinelli PC

Polsinelli PC

Schedule A

Opinion Guarantor	Opinion Jurisdiction
Nextel South Corp.	Georgia
SIHI New Zealand Holdco, Inc.	Kansas
Sprint Communications LLC	Kansas
Sprint International Holding, Inc.	Kansas
Sprint/United Management Company	Kansas
SprintCom LLC	Kansas
Utelcom LLC	Kansas
Clear Wireless LLC	Nevada
Clearwire Hawaii Partners Spectrum, LLC	Nevada
Clearwire Spectrum Holdings LLC	Nevada
Clearwire Spectrum Holdings II LLC	Nevada
Clearwire Spectrum Holdings III LLC	Nevada
USST of Texas, Inc.	Texas
Sprint Communications Company of Virginia, Inc.	Virginia