T-Mobile encountered technical errors during a forced migration of longtime customers to new rate plans, accidentally canceling some users' free-line promotions and resulting in dramatically higher bills for some affected customers. The company has acknowledged the mistakes, attributing them to technical issues, and says it is working to restore the free lines and reverse any erroneous charges. However, the broader price increases of up to $6 per line that triggered the migration remain in place, continuing a pattern of billing controversies that has angered loyal T-Mobile customers since the company abandoned its lifetime price guarantee in 2024.
