T-Mobile Cuts Over 1,100 Legacy Billing Codes in Automated Migration

T-Mobile begins automatically moving customers from older plans to its 5G lineup on July 13, 2026, removing more than 1,100 legacy billing codes. The scale reflects the operational strain from Sprint's 2020 acquisition: fragmented rate structures, promotional overlays, and regional pricing tiers that have compounded complexity. Enterprise mobility managers should review their plan stacks now; consumers on current plans will see minimal disruption.