0001140361-24-024941 Sample Contracts

3.700% SENIOR NOTES DUE 2032 SIXTEENTH SUPPLEMENTAL INDENTURE Dated as of May 8, 2024 DEUTSCHE BANK TRUST COMPANY AMERICAS as Trustee, Paying Agent and Registrar to INDENTURE Dated as of September 15, 2022

Senior Notes Indenture • May 8th, 2024 • T-Mobile US, Inc. • Radiotelephone communications • New York

• Contract Type
  Senior Notes Indenture
• Filed
  May 8th, 2024
• Company
  T-Mobile US, Inc.
• Industry
  Radiotelephone communications
• Jurisdiction
  New York

SIXTEENTH SUPPLEMENTAL INDENTURE (this “Sixteenth Supplemental Indenture”), dated as of May 8, 2024 (the “Series Issue Date”), among T-Mobile USA, Inc., a Delaware corporation (the “Issuer”), T-Mobile, US, Inc., a Delaware corporation (“Parent,” as a guarantor), and the other guarantors party hereto (together with Parent, the “Guarantors”) and Deutsche Bank Trust Company Americas, a New York banking corporation, as Trustee, Paying Agent and Registrar.

3.850% SENIOR NOTES DUE 2036 SEVENTEENTH SUPPLEMENTAL INDENTURE Dated as of May 8, 2024 DEUTSCHE BANK TRUST COMPANY AMERICAS as Trustee, Paying Agent and Registrar to INDENTURE Dated as of September 15, 2022

Seventeenth Supplemental Indenture • May 8th, 2024 • T-Mobile US, Inc. • Radiotelephone communications • New York

• Contract Type
  Seventeenth Supplemental Indenture
• Filed
  May 8th, 2024
• Company
  T-Mobile US, Inc.
• Industry
  Radiotelephone communications
• Jurisdiction
  New York

SEVENTEENTH SUPPLEMENTAL INDENTURE (this “Seventeenth Supplemental Indenture”), dated as of May 8, 2024 (the “Series Issue Date”), among T-Mobile USA, Inc., a Delaware corporation (the “Issuer”), T-Mobile, US, Inc., a Delaware corporation (“Parent,” as a guarantor), and the other guarantors party hereto (together with Parent, the “Guarantors”) and Deutsche Bank Trust Company Americas, a New York banking corporation, as Trustee, Paying Agent and Registrar.

3.550% SENIOR NOTES DUE 2029 FIFTEENTH SUPPLEMENTAL INDENTURE Dated as of May 8, 2024 DEUTSCHE BANK TRUST COMPANY AMERICAS as Trustee, Paying Agent and Registrar to INDENTURE Dated as of September 15, 2022

Fifteenth Supplemental Indenture • May 8th, 2024 • T-Mobile US, Inc. • Radiotelephone communications • New York

• Contract Type
  Fifteenth Supplemental Indenture
• Filed
  May 8th, 2024
• Company
  T-Mobile US, Inc.
• Industry
  Radiotelephone communications
• Jurisdiction
  New York

FIFTEENTH SUPPLEMENTAL INDENTURE (this “Fifteenth Supplemental Indenture”), dated as of May 8, 2024 (the “Series Issue Date”), among T-Mobile USA, Inc., a Delaware corporation (the “Issuer”), T-Mobile, US, Inc., a Delaware corporation (“Parent,” as a guarantor), and the other guarantors party hereto (together with Parent, the “Guarantors”) and Deutsche Bank Trust Company Americas, a New York banking corporation, as Trustee, Paying Agent and Registrar.