T-Mobile is restoring free lines some customers lost after a forced plan migration.
Why it matters: The migration has already triggered billing disputes, changed plan eligibility and left some customers facing unexpected price changes. Wireless customers need to check whether account changes altered promotions or service terms.
- Ars Technica reported July 16, 2026, that T-Mobile is restoring free-line promotions lost in the migration.
- Android Authority reported that some customers moved to Experience Signature plans were told their long-standing free lines were no longer eligible.
- The Mobile Report said T-Mobile’s transition involved 62 new target plans and 1,100 retired legacy plan codes.
- Customers may only learn their destination plan after a migration text message and an account check, The Mobile Report said.
T-Mobile is moving to reverse a plan-migration problem that left some legacy customers without free-line promotions they had expected to keep. Ars Technica reported that the carrier is restoring those promotions after the migration error.
The issue centers on customers shifted to Experience Signature plans. Android Authority reported that support told some customers their long-standing free lines were no longer eligible under the new plan structure.
The broader migration was complex. The Mobile Report said T-Mobile’s transition included 62 newly created target plans and 1,100 retired legacy plan codes. It also reported that customers often learn their destination plan through a migration text message and then have to confirm the change in their account.
The practical risk is straightforward: a carrier-initiated migration can change pricing, promotions or plan eligibility without an obvious warning. That can turn a routine account update into a billing dispute.
By the numbers
- 62 - newly created target plans in T-Mobile's migration, according to The Mobile Report.
- 1,100 - retired legacy plan codes, according to The Mobile Report.
Yes, but: It is still not clear how many customers lost free lines or how broadly T-Mobile is reversing the issue.
What's next: Customers affected by the migration will need to watch for account updates and billing adjustments as T-Mobile restores promotions.