The fact
T-Mobile canceled longtime customers' free-line promotions as part of a forced migration to new rate plans, causing monthly bills to spike by hundreds of dollars. One customer reported having 3 paid lines and 6 free lines for ~$50/month — after migration, the bill jumped to over $300. T-Mobile admitted the problem, called it a "technical error," and promised to restore the lines and discounts.
Context
T-Mobile announced in June 2026 that it would eliminate older plans and automatically move customers to new rate plans. The company promised that "every customer moved to a new plan will keep their current benefits while gaining improvements in network and service experiences." That promise was broken.
The carrier had already ended its lifetime price guarantee in 2024, paving the way for adjustments. The forced migration includes price hikes of $6 per line for many long-time users.
Beyond the loss of free lines, customers reported a mysterious extra hotspot data add-on, adding as much as $15 to monthly bills. T-Mobile also admitted it is investigating incorrect Hulu charges following migration.
Analysis
The case exposes a troubling pattern among US carriers. First, the promise to "keep benefits" was broken almost immediately — free lines disappeared, and T-Mobile only admitted the error after backlash on Reddit and Mobile Report.
Second, restoration is not trivial. One customer reported that T-Mobile support couldn't reactivate the free line and only offered a one-year credit as compensation. If T-Mobile relies on legacy systems to manage old promotions, the fix could take weeks or require manual intervention.
Third, the episode comes at a time when T-Mobile is trying to reposition itself as a premium carrier, after years as the market "disruptor" with low prices and generous perks. The forced migration with price hikes — and now technical errors — directly contradicts that narrative.
What to watch
- Will T-Mobile publish a fix timeline? Customers should monitor their bills - Potential class action: if restoration isn't complete and timely - Impact on churn rate: long-time customers with free lines are the most loyal — and the most affected - T-Mobile's response will set a precedent for how other carriers (Verizon, AT&T) handle similar migrations
Source: Ars Technica
