Fifty-First Supplemental Indenture, dated as of March 10, 2025, by and among T-Mobile USA, Inc., the guarantors party thereto and Deutsche Bank Trust Company Americas, as trustee

FIFTY-FIRST SUPPLEMENTAL INDENTURE (this “Fifty-First Supplemental Indenture”), dated as of March 10, 2025, among T-Mobile USA, Inc. (the “Company”), the entities listed on Schedule I hereto (the “New Guarantors”), the existing guarantors signatory hereto (the “Existing Guarantors”) and Deutsche Bank Trust Company Americas, as trustee under the Indenture referred to below (the “Trustee”).

WHEREAS, the Company has heretofore executed and delivered to the Trustee an Indenture, dated as of April 28, 2013 (the “Base Indenture”) as amended and supplemented with respect to the Company’s (a) 5.375% Senior Notes due 2027 pursuant to the Twenty-Fifth Supplemental Indenture dated as of March 16, 2017, (b) 4.750% Senior Notes due 2028 pursuant to the Thirty-Third Supplemental Indenture dated as of January 25, 2018, (c) 4.750% Senior Notes due 2028-1 pursuant to the Thirty-Sixth Supplemental Indenture dated as of April 30, 2018, (d) 2.250% Senior Notes due 2026 pursuant to the Forty-Third Supplemental Indenture dated as of January 14, 2021, (e) 2.625% Senior Notes due 2029 pursuant to the Forty-Fourth Supplemental Indenture dated as of January 14, 2021, (f) 2.875% Senior Notes due 2031 pursuant to the Forty-Fifth Supplemental Indenture dated as of January 14, 2021, (g) 2.625% Senior Notes due 2026 pursuant to the Forty-Sixth Supplemental Indenture dated as of March 23, 2021, (h) 3.375% Senior Notes due 2029 pursuant to the Forty-Seventh Supplemental Indenture dated as of March 23, 2021 and (i) 3.500% Senior Notes due 2031 pursuant to the Forty-Eighth Supplemental Indenture dated as of March 23, 2021, and as amended and supplemented by the Eleventh Supplemental Indenture dated as of May 1, 2013, the Sixteenth Supplemental Indenture dated as of August 11, 2014, the Nineteenth Supplemental Indenture dated as of September 28, 2015, the Thirty-Fourth Supplemental Indenture dated as of April 26, 2018, the Thirty-Seventh Supplemental Indenture dated as of May 20, 2018, the Thirty-Eighth Supplemental Indenture dated as of December 20, 2018, the Fortieth Supplemental Indenture, dated as of September 27, 2019, the Forty-First Supplemental Indenture, dated as of April 1, 2020, the Forty-Ninth Supplemental Indenture dated as of March 30, 2021 and the Fiftieth Supplemental Indenture, dated as of May 21, 2024 (the Base Indenture as so amended and supplemented, the “Indenture”);

WHEREAS, Section 4.17 of the Indenture provides that under certain circumstances the Company is required to cause the New Guarantors to execute and deliver to the Trustee a supplemental indenture pursuant to which each of the New Guarantors shall become a Guarantor of the applicable Notes on the terms and conditions set forth herein; and

WHEREAS, pursuant to Section 9.01 of the Indenture, the Trustee, the Company, the Existing Guarantors and the New Guarantors are authorized to execute and deliver this Fifty-First Supplemental Indenture.

NOW THEREFORE, in consideration of the foregoing and for other good and valuable consideration, the receipt of which is hereby acknowledged, the Company, the New Guarantors, the Existing Guarantors and the Trustee mutually covenant and agree for the benefit of the Holders of the applicable Notes as follows:

1.    Defined Terms. As used in this Fifty-First Supplemental Indenture, capitalized terms used but not defined herein shall have the meaning set forth in the Indenture. The words “herein,”

“hereof” and “hereby” and other words of similar import used in this Fifty-First Supplemental Indenture refer to this Fifty-First Supplemental Indenture as a whole and not to any particular section hereof.

2.    Agreement to Guarantee. The New Guarantors hereby agree, jointly and severally, to unconditionally guarantee, and the Existing Guarantors hereby affirm their joint and several unconditional guarantee of, the Company’s obligations under the Notes and the Indenture on the terms and subject to the conditions set forth in the Indenture including but not limited to ARTICLE X thereof.

3.    Notices. All notices or other communications to the Company and the New Guarantors shall be given as provided in Section 12.02 of the Indenture.

4.    Ratification of Indenture; Supplemental Indentures Part of Indenture. Except as expressly contemplated hereby, the Indenture is in all respects ratified and confirmed and all the terms, conditions and provisions thereof shall remain in full force and effect.

5.    Governing Law. THIS FIFTY-FIRST SUPPLEMENTAL INDENTURE WILL BE GOVERNED BY THE LAWS OF THE STATE OF NEW YORK.

6.    The Trustee. The Trustee shall not be responsible in any manner whatsoever for or in respect of the validity or sufficiency of this Fifty-First Supplemental Indenture or for or in respect of the recitals contained herein, all of which recitals are made solely by the New Guarantors and the Company.

7.    Counterpart Originals. This Fifty-First Supplemental Indenture may be executed in any number of counterparts and by the parties hereto in separate counterparts, each of which when so executed will be deemed to be an original and all of which taken together will constitute one and the same agreement. The exchange of copies of this Fifty-First Supplemental Indenture and of signature pages by facsimile or PDF transmission shall constitute effective execution and delivery of this Fifty-First Supplemental Indenture as to the parties hereto and may be used in lieu of the original Fifty-First Supplemental Indenture for all purposes. Signatures of the parties hereto transmitted by facsimile or PDF transmission shall be deemed to be their original signatures for all purposes. The parties may sign any number of copies of this Fifty-First Supplemental Indenture. Each signed copy will be an original, but all of them together represent the same agreement.

8.    Headings, etc. The headings of the Articles and Sections of this Fifty-First Supplemental Indenture have been inserted for convenience of reference only, are not to be considered a part of this Fifty-First Supplemental Indenture and will in no way modify or restrict any of the terms or provisions hereof.

    

IN WITNESS WHEREOF, the parties hereto have caused this Fifty-First Supplemental Indenture to be duly executed, all as of the date first above written.

T-MOBILE USA, INC.

By: /s/ Johannes Thorsteinsson    
Name: Johannes Thorsteinsson

Title: Senior Vice President, Treasury & Treasurer

T-MOBILE US, INC.

By: /s/ Johannes Thorsteinsson    
Name: Johannes Thorsteinsson

Title: Senior Vice President, Treasury & Treasurer

ADSTRUC, LLC

BLIS USA, INC.

VISTAR MEDIA GLOBAL PARTNERS, LLC

VISTAR MEDIA INC., each as a Guarantor

By: /s/ Johannes Thorsteinsson    
Name: Johannes Thorsteinsson

Title: Senior Vice President, Treasury & Treasurer

APC REALTY AND EQUIPMENT COMPANY, LLC

ASSURANCE WIRELESS OF SOUTH CAROLINA, LLC

ASSURANCE WIRELESS USA, L.P.

ATI SUB, LLC

CLEARWIRE COMMUNICATIONS LLC

CLEARWIRE LEGACY LLC

CLEARWIRE SPECTRUM HOLDINGS II LLC

CLEARWIRE SPECTRUM HOLDINGS III LLC

CLEARWIRE SPECTRUM HOLDINGS LLC

FIXED WIRELESS HOLDINGS, LLC

IBSV LLC

METROPCS CALIFORNIA, LLC

METROPCS FLORIDA, LLC

METROPCS GEORGIA, LLC

METROPCS MASSACHUSETTS, LLC

METROPCS MICHIGAN, LLC

METROPCS NEVADA, LLC

METROPCS NEW YORK, LLC

METROPCS PENNSYLVANIA, LLC

METROPCS TEXAS, LLC

MINT MOBILE, LLC

MINT MOBILE INCENTIVE COMPANY, LLC

NEXTEL SYSTEMS, LLC

NEXTEL WEST CORP.

NSAC, LLC

PRWIRELESS PR, LLC

PUSHSPRING, LLC

SPRINT CAPITAL CORPORATION

SPRINT COMMUNICATIONS LLC

SPRINT LLC

SPRINT SOLUTIONS LLC

SPRINT SPECTRUM REALTY COMPANY, LLC

TDI ACQUISITION SUB, LLC

T-MOBILE CENTRAL LLC

T-MOBILE INNOVATIONS LLC

T-MOBILE LICENSE LLC

T-MOBILE NORTHEAST LLC

T-MOBILE PUERTO RICO HOLDINGS LLC

T-MOBILE PUERTO RICO LLC

T-MOBILE RESOURCES LLC

T-MOBILE SOUTH LLC

T-MOBILE WEST LLC
TMUS INTERNATIONAL LLC

TVN VENTURES LLC, each as a Guarantor

By: /s/ Johannes Thorsteinsson    

Name: Johannes Thorsteinsson

Title: Senior Vice President, Treasury & Treasurer

UVNV, LLC

VMU GP, LLC

WBSY LICENSING, LLC, each as a Guarantor

By: /s/ Johannes Thorsteinsson    

Name: Johannes Thorsteinsson

Title: Senior Vice President, Treasury & Treasurer

SPRINTCOM LLC

SPRINT SPECTRUM LLC

T-MOBILE FINANCIAL LLC

T-MOBILE LEASING LLC, each as a Guarantor

By: /s/ Johannes Thorsteinsson        

Name: Johannes Thorsteinsson

Title: Assistant Treasurer

BREEZE ACQUISITION SUB LLC, as a Guarantor

By: /s/ Johannes Thorsteinsson        

Name: Johannes Thorsteinsson

Title: Senior Vice President, Treasury & Treasurer

DEUTSCHE BANK TRUST COMPANY AMERICAS, as Trustee

By: /s/ Carol Ng    
Name: Carol Ng
Title: Vice President

By: /s/ Chris Niesz    
Name: Chris Niesz
Title: Director