Exhibit 5.2

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

May 1, 2023

Board of Directors

T-Mobile US, Inc.

12920 SE 38th Street

Bellevue, Washington 98006

Re: Registration Statement on Form S-3

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 a registration statement on Form S-3 (as it may be amended from time to time, the “Registration Statement”) with the Securities and Exchange Commission pursuant to the Securities Act of 1933, as amended (the “Securities Act”). The Registration Statement relates to, among other things, the proposed resale of outstanding notes of T-Mobile held by Deutsche Telekom AG, guaranteed on a senior unsecured basis (the “Guarantees”) by the Parent and T-Mobile’s subsidiary guarantors (including the Opinion Guarantors), as set forth in the prospectus which forms a part of the Registration Statement (the “Prospectus”). 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.

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 and the State of Nevada (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).

polsinelli.com

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Polsinelli PC, Polsinelli LLP in California

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. The Guarantees have been duly authorized by each Opinion Guarantor.

This opinion letter has been prepared for use in connection with the Registration Statement. 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 Registration Statement and to the reference to this firm under the caption “Legal Matters” in the 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
SprintCom LLC	Kansas
Clear Wireless LLC	Nevada
Clearwire Spectrum Holdings LLC	Nevada
Clearwire Spectrum Holdings II LLC	Nevada
Clearwire Spectrum Holdings III LLC	Nevada