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Title and Terms of Notes from Supplemental Indenture

TWENTY-NINTH SUPPLEMENTAL INDENTURE (this Twenty-Ninth Supplemental Indenture), dated as of May 9, 2017 (the Series Issue Date), among T-Mobile USA, Inc., a Delaware corporation (the Company), the Guarantors party hereto and Deutsche Bank Trust Company Americas, a New York banking corporation, as Trustee (the Trustee).

Title and Terms of Notes. The aggregate principal amount of Notes of this Series which shall be authenticated and delivered on the Series Issue Date under the Indenture shall be $2,000,000,000; provided, however, that subject to the Companys compliance with Section 4.09 of the Base Indenture, the Company from time to time, without giving notice to or seeking the consent of the Holders of Notes of this Series, may issue additional notes (the Additional Notes) in any amount having the same terms as the Notes of this Series in all respects, except for the issue date, the issue price, the initial Interest Payment Date and rights under a related registration rights agreement, if any. Any such Additional Notes shall be authenticated by the Trustee upon receipt of a Company Order to that effect, and when so authenticated, will constitute Notes for all purposes of the Indenture and will (together with all other Notes of this Series issued under the Indenture) constitute a single Series of Notes under the Indenture; provided that if such Additional Notes are not fungible with the Notes of this Series for U.S. federal income tax purposes, as applicable, as determined by the Company, such Additional Notes may have a separate CUSIP number.

Title and Terms of Notes from Supplemental Indenture

TWENTY-SIXTH SUPPLEMENTAL INDENTURE (this Twenty-Sixth Supplemental Indenture), dated as of April 27, 2017 (the Series Issue Date), among T-Mobile USA, Inc., a Delaware corporation (the Company), the Guarantors party hereto and Deutsche Bank Trust Company Americas, a New York banking corporation, as Trustee.

Title and Terms of Notes. The aggregate principal amount of Notes of this Series which shall be authenticated and delivered on the Series Issue Date under the Indenture shall be $500,000,000; provided, however, that subject to the Companys compliance with Section 4.09 of the Base Indenture, the Company from time to time, without giving notice to or seeking the consent of the Holders of Notes of this Series, may issue additional notes (the Additional Notes) in any amount having the same terms as the Notes of this Series in all respects, except for the issue date, the issue price, the initial Interest Payment Date and rights under a related registration rights agreement, if any. Any such Additional Table of Contents Notes shall be authenticated by the Trustee upon receipt of a Company Order to that effect, and when so authenticated, will constitute Notes for all purposes of the Indenture and will (together with all other Notes of this Series issued under the Indenture) constitute a single Series of Notes under the Indenture; provided that if such Additional Notes are not fungible with the Notes of this Series for U.S. federal income tax purposes, as applicable, as determined by the Company, such Additional Notes may have a separate CUSIP number.

Title and Terms of Notes from Supplemental Indenture

TWENTY-EIGHTH SUPPLEMENTAL INDENTURE (this Twenty-Eighth Supplemental Indenture), dated as of April 28, 2017 (the Series Issue Date), among T-Mobile USA, Inc., a Delaware corporation (the Company), the Guarantors party hereto and Deutsche Bank Trust Company Americas, a New York banking corporation, as Trustee.

Title and Terms of Notes. The aggregate principal amount of Notes of this Series which shall be authenticated and delivered on the Series Issue Date under the Indenture shall be $750,000,000; provided, however, that subject to the Companys compliance with Section 4.09 of the Base Indenture, the Company from time to time, without giving notice to or seeking the consent of the Holders of Notes of this Series, may issue additional notes (the Additional Notes) in any amount having the same terms as the Notes of this Series in all respects, except for the issue date, the issue price, the initial Interest Payment Date and rights under a related registration rights agreement, if any. Any such Additional Notes shall be authenticated by the Trustee upon receipt of a Company Order to that effect, and when so authenticated, will constitute Notes for all purposes of the Indenture and will (together with all other Notes of this Series issued under the Indenture) constitute a single Series of Notes under the Indenture; provided that if such Additional Notes are not fungible with the Notes of this Series for U.S. federal income tax purposes, as applicable, as determined by the Company, such Additional Notes may have a separate CUSIP number.

Title and Terms of Notes from Supplemental Indenture

TWENTY-SEVENTH SUPPLEMENTAL INDENTURE (this Twenty-Seventh Supplemental Indenture), dated as of April 28, 2017 (the Series Issue Date), among T-Mobile USA, Inc., a Delaware corporation (the Company), the Guarantors party hereto and Deutsche Bank Trust Company Americas, a New York banking corporation, as Trustee.

Title and Terms of Notes. The aggregate principal amount of Notes of this Series which shall be authenticated and delivered on the Series Issue Date under the Indenture shall be $1,250,000,000; provided, however, that subject to the Companys compliance with Section 4.09 of the Base Indenture, the Company from time to time, without giving notice to or seeking the consent of the Holders of Notes of this Series, may issue additional notes (the Additional Notes) in any amount having the same terms as the Notes of this Series in all respects, except for the issue date, the issue price, the initial Interest Payment Date and rights under a related registration rights agreement, if any. Any such Additional Notes shall be authenticated by the Trustee upon receipt of a Company Order to that effect, and when so authenticated, will constitute Notes for all purposes of the Indenture and will (together with all other Notes of this Series issued under the Indenture) constitute a single Series of Notes under the Indenture; provided that if such Additional Notes are not fungible with the Notes of this Series for U.S. federal income tax purposes, as applicable, as determined by the Company, such Additional Notes may have a separate CUSIP number.

Title and Terms of Notes from Supplemental Indenture

TWENTY-FOURTH SUPPLEMENTAL INDENTURE (this Twenty-Fourth Supplemental Indenture), dated as of March 16, 2017 (the Series Issue Date), among T-Mobile USA, Inc., a Delaware corporation (the Company), the Guarantors party hereto and Deutsche Bank Trust Company Americas, a New York banking corporation, as Trustee.

Title and Terms of Notes. The aggregate principal amount of Notes of this Series which shall be authenticated and delivered on the Series Issue Date under the Indenture shall be $500,000,000; provided, however, that subject to the Companys compliance with Section 4.09 of the Base Indenture, the Company from time to time, without giving notice to or seeking the consent of the Holders of Notes of this Series, may issue additional notes (the Additional Notes) in any amount having the same terms as the Notes of this Series in all respects, except for the issue date, the issue price, the initial Interest Payment Date and rights under a related registration rights agreement, if any. Any such Additional Notes shall be authenticated by the Trustee upon receipt of a Company Order to that effect, and when so authenticated, will constitute Notes for all purposes of the Indenture and will (together with all other Notes of this Series issued under the Indenture) constitute a single Series of Notes under the Indenture; provided that if such Additional Notes are not fungible with the Notes of this Series for U.S. federal income tax purposes, as applicable, as determined by the Company, such Additional Notes may have a separate CUSIP number.

Title and Terms of Notes from Note

TWENTY-THIRD SUPPLEMENTAL INDENTURE (this Twenty-Third Supplemental Indenture), dated as of March 16, 2017 (the Series Issue Date), among T-Mobile USA, Inc., a Delaware corporation (the Company), the Guarantors party hereto and Deutsche Bank Trust Company Americas, a New York banking corporation, as Trustee.

Title and Terms of Notes. The aggregate principal amount of Notes of this Series which shall be authenticated and delivered on the Series Issue Date under the Indenture shall be $500,000,000; provided, however, that subject to the Companys compliance with Section 4.09 of the Base Indenture, the Company from time to time, without giving notice to or seeking the consent of the Holders of Notes of this Series, may issue additional notes (the Additional Notes) in any amount having the same terms as the Notes of this Series in all respects, except for the issue date, the issue price, the initial Interest Payment Date and rights under a related registration rights agreement, if any. Any such Additional Notes shall be authenticated by the Trustee upon receipt of a Company Order to that effect, and when so authenticated, will constitute Notes for all purposes of the Indenture and will (together with all other Notes of this Series issued under the Indenture) constitute a single Series of Notes under the Indenture; provided that if such Additional Notes are not fungible with the Notes of this Series for U.S. federal income tax purposes, as applicable, as determined by the Company, such Additional Notes may have a separate CUSIP number.

Title and Terms of Notes from Note

TWENTY-FIFTH SUPPLEMENTAL INDENTURE (this Twenty-Fifth Supplemental Indenture), dated as of March 16, 2017 (the Series Issue Date), among T-Mobile USA, Inc., a Delaware corporation (the Company), the Guarantors party hereto and Deutsche Bank Trust Company Americas, a New York banking corporation, as Trustee.

Title and Terms of Notes. The aggregate principal amount of Notes of this Series which shall be authenticated and delivered on the Series Issue Date under the Indenture shall be $500,000,000; provided, however, that subject to the Companys compliance with Section 4.09 of the Base Indenture, the Company from time to time, without giving notice to or seeking the consent of the Holders of Notes of this Series, may issue additional notes (the Additional Notes) in any amount having the same terms as the Notes of this Series in all respects, except for the issue date, the issue price, the initial Interest Payment Date and rights under a related registration rights agreement, if any. Any such Additional Notes shall be authenticated by the Trustee upon receipt of a Company Order to that effect, and when so authenticated, will constitute Notes for all purposes of the Indenture and will (together with all other Notes of this Series issued under the Indenture) constitute a single Series of Notes under the Indenture; provided that if such Additional Notes are not fungible with the Notes of this Series for U.S. federal income tax purposes, as applicable, as determined by the Company, such Additional Notes may have a separate CUSIP number.