T-MOBILE USA, INC. and T-MOBILE US, INC. and EACH OF THE SUBSIDIARY GUARANTORS FROM TIME TO TIME PARTY HERETO SUPPLEMENTAL INDENTURE Dated as of , 2025 DEUTSCHE BANK TRUST COMPANY AMERICAS as Trustee to INDENTURE Dated as of September 15, 2022Supplemental Indenture • May 20th, 2025 • Sprint Capital Corp • Telephone communications (no radiotelephone) • New York
WHEREAS, pursuant to the securities purchase agreement, dated as of May 24, 2024, by and among Telephone and Data Systems, Inc., a Delaware corporation, United States Cellular Corporation, a Delaware corporation (“USCC”), USCC Wireless Holdings, LLC, a Delaware limited liability company, and Parent, the Issuer has conducted an exchange offer and consent solicitation pursuant to the registration statement on Form S-4 (File No. 333- ) filed on May 20, 2025 by the Issuer and the Guarantors with the Securities and Exchange Commission (the “SEC”) under the Securities Act of 1933, as amended (the “Securities Act”), and declared effective by the SEC on , 2025, and the related prospectus dated May 23, 2025, as filed with the SEC pursuant to Rule 424(b) under the Securities Act, for any and all of USCC’s validly tendered (and not validly withdrawn) and accepted 5.500% Senior Notes due 2070 maturing March 1, 2070 (the “USCC March 2070 Notes”) for like notes to be issued by the Issuer and initial
T-MOBILE USA, INC. and T-MOBILE US, INC. and EACH OF THE SUBSIDIARY GUARANTORS FROM TIME TO TIME PARTY HERETO SUPPLEMENTAL INDENTURE Dated as of , 2025 DEUTSCHE BANK TRUST COMPANY AMERICAS as Trustee to INDENTURE Dated as of September 15, 2022Supplemental Indenture • May 20th, 2025 • Sprint Capital Corp • Telephone communications (no radiotelephone) • New York
WHEREAS, pursuant to the securities purchase agreement, dated as of May 24, 2024, by and among Telephone and Data Systems, Inc., a Delaware corporation, United States Cellular Corporation, a Delaware corporation (“USCC”), USCC Wireless Holdings, LLC, a Delaware limited liability company, and Parent, the Issuer has conducted an exchange offer and consent solicitation pursuant to the registration statement on Form S-4 (File No. 333- ) filed on May 20, 2025 by the Issuer and the Guarantors with the Securities and Exchange Commission (the “SEC”) under the Securities Act of 1933, as amended (the “Securities Act”), and declared effective by the SEC on , 2025, and the related prospectus dated May 23, 2025, as filed with the SEC pursuant to Rule 424(b) under the Securities Act, for any and all of USCC’s validly tendered (and not validly withdrawn) and accepted 6.700% Senior Notes due 2033 (the “USCC 2033 Notes”) for like notes to be issued by the Issuer and initially to be fully and unconditio
T-MOBILE USA, INC. and T-MOBILE US, INC. and EACH OF THE SUBSIDIARY GUARANTORS FROM TIME TO TIME PARTY HERETO SUPPLEMENTAL INDENTURE Dated as of , 2025 DEUTSCHE BANK TRUST COMPANY AMERICAS as Trustee to INDENTURE Dated as of September 15, 2022Supplemental Indenture • May 20th, 2025 • Sprint Capital Corp • Telephone communications (no radiotelephone) • New York
WHEREAS, pursuant to the securities purchase agreement, dated as of May 24, 2024, by and among Telephone and Data Systems, Inc., a Delaware corporation, United States Cellular Corporation, a Delaware corporation (“USCC”), USCC Wireless Holdings, LLC, a Delaware limited liability company, and Parent, the Issuer has conducted an exchange offer and consent solicitation pursuant to the registration statement on Form S-4 (File No. 333- ) filed on May 20, 2025 by the Issuer and the Guarantors with the Securities and Exchange Commission (the “SEC”) under the Securities Act of 1933, as amended (the “Securities Act”), and declared effective by the SEC on , 2025, and the related prospectus dated May 23, 2025, as filed with the SEC pursuant to Rule 424(b) under the Securities Act, for any and all of USCC’s validly tendered (and not validly withdrawn) and accepted 5.500% Senior Notes due 2070 maturing June 1, 2070 (the “USCC June 2070 Notes”) for like notes to be issued by the Issuer and initially
T-MOBILE USA, INC. and T-MOBILE US, INC. and EACH OF THE SUBSIDIARY GUARANTORS FROM TIME TO TIME PARTY HERETO SUPPLEMENTAL INDENTURE Dated as of , 2025 DEUTSCHE BANK TRUST COMPANY AMERICAS as Trustee to INDENTURE Dated as of September 15, 2022Supplemental Indenture • May 20th, 2025 • Sprint Capital Corp • Telephone communications (no radiotelephone) • New York
WHEREAS, pursuant to the securities purchase agreement, dated as of May 24, 2024, by and among Telephone and Data Systems, Inc., a Delaware corporation, United States Cellular Corporation, a Delaware corporation (“USCC”), USCC Wireless Holdings, LLC, a Delaware limited liability company, and Parent, the Issuer has conducted an exchange offer and consent solicitation pursuant to the registration statement on Form S-4 (File No. 333- ) filed on May 20, 2025 by the Issuer and the Guarantors with the Securities and Exchange Commission (the “SEC”) under the Securities Act of 1933, as amended (the “Securities Act”), and declared effective by the SEC on , 2025, and the related prospectus dated May 23, 2025, as filed with the SEC pursuant to Rule 424(b) under the Securities Act, for any and all of USCC’s validly tendered (and not validly withdrawn) and accepted 6.250% Senior Notes due 2069 (the “USCC 2069 Notes”) for like notes to be issued by the Issuer and initially to be fully and unconditio