0001140361-23-043964 Sample Contracts

5.750% SENIOR NOTES DUE 2034 TENTH SUPPLEMENTAL INDENTURE Dated as of September 14, 2023 DEUTSCHE BANK TRUST COMPANY AMERICAS as Trustee to INDENTURE Dated as of September 15, 2022

Tenth Supplemental Indenture • September 14th, 2023 • T-Mobile US, Inc. • Radiotelephone communications • New York

• Contract Type
  Tenth Supplemental Indenture
• Filed
  September 14th, 2023
• Company
  T-Mobile US, Inc.
• Industry
  Radiotelephone communications
• Jurisdiction
  New York

TENTH SUPPLEMENTAL INDENTURE (this “Tenth Supplemental Indenture”), dated as of September 14, 2023 (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.

6.000% SENIOR NOTES DUE 2054 ELEVENTH SUPPLEMENTAL INDENTURE Dated as of September 14, 2023 DEUTSCHE BANK TRUST COMPANY AMERICAS as Trustee to INDENTURE Dated as of September 15, 2022

Eleventh Supplemental Indenture • September 14th, 2023 • T-Mobile US, Inc. • Radiotelephone communications • New York

• Contract Type
  Eleventh Supplemental Indenture
• Filed
  September 14th, 2023
• Company
  T-Mobile US, Inc.
• Industry
  Radiotelephone communications
• Jurisdiction
  New York

ELEVENTH SUPPLEMENTAL INDENTURE (this “Eleventh Supplemental Indenture”), dated as of September 14, 2023 (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.