Book size: 1850; Registration: SEC Registered; Comments: EUR750m 6yr, cpn 3.20% at 99.823, yld 3.233%. Spread: MS+70. DBR 0 02/15/32 | HR 106%. MWC: B+15. Par Call: 2m. LEI: 549300V2JRLO5DIFGE82 ; Book size: 1950; Registration: SEC Registered; Comments: EUR750m 9yr, cpn 3.625% at 99.902, yld 3.638%. Spread: MS+90. DBR 2 1/2 02/15/35 | HR 97%. MWC: B+15. Par Call: 2m. LEI: 549300V2JRLO5DIFGE82 ; Book size: 1750; Registration: SEC Registered; Comments: EUR1bn 12yr, cpn 3.90% at 99.511, yld 3.952%. Spread: MS+105. DBR 4 01/04/37 | HR 95%. MWC: B+20. Par Call: 2m. LEI: 549300V2JRLO5DIFGE82 ;

Reoffer: 6yr: MS+70bp / 99.823 / 3.233% 9yr: MS+90bp / 99.902 / 3.638% 12yr: MS+105bp / 99.511 / 3.952% Benchmark: 6yr: DBR 0 15-Feb-32 @ 86.535 / B+79.2 / HR 106% 9yr: DBR 2.5 15-Feb-35 @ 98.325 / B+92.6 / HR 97% 12yr: DBR 4 04-Jan-37 @ 110.43 / B+108.2 / HR 95% Final Books: Combined books in excess of €5.5bn. 6yr: > €1.85bn, 9yr: ~€1.95bn, 12yr: ~€1.75bn Launched: 6yr: €750m @ MS+70bp 9yr: €750m @ MS+90bp 12yr: €1bn @ MS+105bp IPTs: 6yr: MS+100/105bp 9yr: MS+120/125bp 12yr: MS+140/145bp Issuer: T-Mobile USA, Inc. Guarantors: The notes will be guaranteed (i) initially by T-Mobile US, Inc. (Ticker: TMUS, Country: US) and each wholly-owned subsidiary of the Issuer that is not an Excluded Subsidiary and is an obligor under the Credit Agreement and (ii) by any future direct or indirect subsidiary of TMUS that is not a subsidiary of the Issuer or any other guarantor that owns capital stock of the Issuer Issuer Ratings: Baa1/BBB/BBB+ (Moody's/S&P/Fitch) Exp. Issue Ratings: Baa1/BBB/BBB+ (Moody's/S&P/Fitch) Issuer LEI: 549300V2JRLO5DIFGE82 Settlement Date: 19-Feb-26 (T+5) Size: 6yr: €750m 9yr: €750m 12yr: €1bn Maturity: 6yr: 19-Feb-32 9yr: 19-Feb-35 12yr: 19-Feb-38 Coupon: 6yr: 3.200% 9yr: 3.625% 12yr: 3.900% Re-offer price / yld: 6yr: 99.823% / 3.233% 9yr: 99.902% / 3.638% 12yr: 99.511% / 3.952% Re-offer: 6yr: MS+70bp 9yr: MS+90bp 12yr: MS+105bp ISIN / Common Code: 6yr: XS3298843684 / 329884368 9yr: XS3298843924 / 329884392 12yr: XS3298844146 / 329884414 Optional Redemption: 6yr: Make-Whole Call (B+15) & 2mo Par Call 9yr: Make-Whole Call (B+15) & 2mo Par Call 12yr: Make-Whole Call (B+20) & 2mo Par Call TOE: 16.04 FTT: 08.00 UKT tomorrow subject to the final term sheet Denominations: €100k x €1k Clearing: Euroclear / Clearstream Tax Redemption: 100% Format: SEC Registered, Senior Unsecured Listing: NASDAQ Bond Exchange Governing Law: New York UoP: General corporate purposes, which may include among other things, share repurchases, any dividends declared by T-Mobile US, Inc.'s Board of Directors and refinancing of existing indebtedness on an ongoing basis Selling Restrictions: As per the Preliminary Prospectus Supplement Active Bookrunners: Barclays(B&D), BNP Paribas, Crédit Agricole CIB, Goldman Sachs & Co. LLC, Morgan Stanley Target Market: Manufacturer target market (MIFID II and UK MiFIR product governance) is eligible counterparties and professional clients only (all distribution channels). No EEA PRIIPs or UK PRIIPs key information document (KID) has been prepared as not available to retail in EEA or UK Stabilization: Relevant stabilization regulations including FCA/ICMA apply

T-Mobile US Inc and each wholly-owned subsidiary

General corporate purposes, which may include among other things, share repurchases, any dividends declared by T-Mobile US, Inc.'s Board of Directors and refinancing of existing indebtedness on an ongoing basis