0001140361-20-022594 Sample Contracts

3.000% SENIOR SECURED NOTES DUE 2041 TWELFTH SUPPLEMENTAL INDENTURE Dated as of October 6, 2020 DEUTSCHE BANK TRUST COMPANY AMERICAS as Trustee to INDENTURE Dated as of April 9, 2020

Twelfth Supplemental Indenture • October 6th, 2020 • T-Mobile US, Inc. • Radiotelephone communications • New York

• Contract Type
  Twelfth Supplemental Indenture
• Filed
  October 6th, 2020
• Company
  T-Mobile US, Inc.
• Industry
  Radiotelephone communications
• Jurisdiction
  New York

TWELFTH SUPPLEMENTAL INDENTURE (this “Twelfth Supplemental Indenture”), dated as of October 6, 2020 (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.

2.050% SENIOR SECURED NOTES DUE 2028 TENTH SUPPLEMENTAL INDENTURE Dated as of October 6, 2020 DEUTSCHE BANK TRUST COMPANY AMERICAS as Trustee to INDENTURE Dated as of April 9, 2020

Tenth Supplemental Indenture • October 6th, 2020 • T-Mobile US, Inc. • Radiotelephone communications • New York

• Contract Type
  Tenth Supplemental Indenture
• Filed
  October 6th, 2020
• Company
  T-Mobile US, Inc.
• Industry
  Radiotelephone communications
• Jurisdiction
  New York

TENTH SUPPLEMENTAL INDENTURE (this “Tenth Supplemental Indenture”), dated as of October 6, 2020 (the “Additional Notes 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.

2.550% SENIOR SECURED NOTES DUE 2031 ELEVENTH SUPPLEMENTAL INDENTURE Dated as of October 6, 2020 DEUTSCHE BANK TRUST COMPANY AMERICAS as Trustee to INDENTURE Dated as of April 9, 2020

Eleventh Supplemental Indenture • October 6th, 2020 • T-Mobile US, Inc. • Radiotelephone communications • New York

• Contract Type
  Eleventh Supplemental Indenture
• Filed
  October 6th, 2020
• Company
  T-Mobile US, Inc.
• Industry
  Radiotelephone communications
• Jurisdiction
  New York

ELEVENTH SUPPLEMENTAL INDENTURE (this “Eleventh Supplemental Indenture”), dated as of October 6, 2020 (the “Additional Notes 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.

T-MOBILE USA, INC. and T-MOBILE US, INC. and EACH OF THE SUBSIDIARY GUARANTORS FROM TIME TO TIME PARTY HERETO 3.300% SENIOR SECURED NOTES DUE 2051 THIRTEENTH SUPPLEMENTAL INDENTURE Dated as of October 6, 2020 DEUTSCHE BANK TRUST COMPANY AMERICAS as...

Thirteenth Supplemental Indenture • October 6th, 2020 • T-Mobile US, Inc. • Radiotelephone communications • New York

• Contract Type
  Thirteenth Supplemental Indenture
• Filed
  October 6th, 2020
• Company
  T-Mobile US, Inc.
• Industry
  Radiotelephone communications
• Jurisdiction
  New York

THIRTEENTH SUPPLEMENTAL INDENTURE (this “Thirteenth Supplemental Indenture”), dated as of October 6, 2020 (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.