T-Mobile updated its Terms and Conditions effective September 1, 2026, with multiple operational and procedural changes. The company expanded grounds for service termination to explicitly include theft and unlawful conduct, added language clarifying that price commitments do not extend to new technologies or services, restructured account authorization procedures to require authentication of Authorized Users, and removed a prior protection stating that promotional price locks would not increase except per promotion terms. The company also updated contact information, clarified billing and data plan terminology, and modified language around account credentials and reconnection fees.
Consumers: Promotional customers can no longer rely on a blanket promise that their monthly charges will not increase; T-Mobile can now charge for new services or technologies not explicitly covered by the original promotion.
Consumers: T-Mobile now has explicit contractual authority to terminate service for theft or unlawful conduct, broadening the circumstances under which the company can suspend or end service.
The updated terms remove prior language stating that if a promotional rate plan customer qualifies for a price-related promotion, T-Mobile will not increase monthly recurring charges except per promotion terms. The revised language now states that price commitments do not extend to new technologies, features, or services unless expressly stated otherwise. This means promotional customers may face price increases for new services or technologies not explicitly covered by their original promotion. Additionally, T-Mobile expanded grounds for service termination to include theft and unlawful conduct, and restructured how account authorization and credentials are managed, requiring authentication of Authorized Users before access is granted.
→ Review your current rate plan and promotional terms to identify which services or technologies are explicitly covered by your price commitment.
→ Contact T-Mobile customer service to clarify whether new services or technologies introduced after your promotion began will be subject to additional charges.
Removed explicit protection that promotional price commitments would not increase except per promotion terms; added language stating price commitments do not extend to new technologies or services unless expressly stated.
Expanded grounds for service termination to explicitly include theft and unlawful conduct, in addition to prohibited uses, network coverage, and harassing behavior.
Restructured procedures for Authorized Users, requiring T-Mobile to authenticate users before providing access; clarified that account credentials (PIN/passcode and online password) are sensitive and should be protected.
This change record describes what was added, removed, or modified in the document. Analysis reflects what the updated agreement states or permits. It does not constitute a legal determination about enforceability. Applicability may vary by jurisdiction. Methodology
Wording edits to this record that do not change what it claims. Changes to a claim are published as corrections.
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