"We're retiring our oldest plans, some of which were built nearly 15 years ago – in the 3G and 4G eras, and well before our 5G network was fully deployed." – T-Mobile Spokesperson
T-Mobile Announces Automatic Migration from Legacy Plans
T-Mobile has announced plans to automatically migrate customers on certain legacy wireless plans to its current plan lineup, a move that will result in higher monthly bills for many subscribers. The changes, confirmed by the company, affect both individual and some small business customers and are scheduled to take effect in the coming weeks.
Affected Plans and Migration Details
The migration applies to customers on several legacy plans, including Simple Choice, T-Mobile ONE (including One Plus), Magenta family plans, and grandfathered Sprint plans from the 2020 merger.
According to company statements, the move is driven by a need to retire outdated billing systems. T-Mobile is eliminating over 1,100 legacy billing codes.
Customers will be automatically moved to comparable plans within T-Mobile's current lineup, such as Essentials, Essentials Saver, Experience More, Experience Beyond, and Better Value.
No action is required from customers, and there is no option to remain on the old plan.
Customers will receive notifications via text message or the T-Life app starting June 29, 2026. The switch will take effect within the next few billing cycles.
Pricing Changes
Individual Voice Lines
- Voice lines will increase by $6 per line.
Wearable and Tablet Lines
- Watch and tablet lines will increase by $3 per line.
Home Internet
- 5G Home Internet lines will increase by $6 per line.
Pricing Variability
- T-Mobile has stated that some customers will see no change to their monthly bill, while others will see a "modest adjustment."
- Prices for migrated customers are expected to remain generally below the current retail price for the new plan.
Kickback Discontinuation
- The Kickback promo on ONE plans, which provided a $10 discount per line for usage under 2GB, will be discontinued.
Other Promotions
- Free lines are expected to remain free and not subject to the increase.
- The insider discount is expected to carry over to the new plan.
Industry and Company Context
The migration follows similar actions by other major wireless carriers. AT&T added fees to legacy plans in May 2026. T-Mobile itself raised prices on some plans in March 2025.
T-Mobile executives have commented on the reasoning behind the changes. Chief Marketing Officer Allan Samson stated that "a rate plan is a snapshot of the capacity and capability of your network in that moment in time" and noted that network usage has increased over time. Chief Operating Officer Jon Freier, in an internal email, stated that simplifying the plan mix will allow more focus on customer experience and make frontline teams' jobs easier.
A T-Mobile spokesperson said:
"We're retiring our oldest plans, some of which were built nearly 15 years ago – in the 3G and 4G eras, and well before our 5G network was fully deployed. Customers will transition to modern plans that provide access to America’s best wireless technology, enhanced features and a 5-year price guarantee for peace of mind. Some customers will see no change to their monthly bill, while some will see a modest adjustment. Every customer moved to a new plan will keep their current benefits while gaining improvements in network and service experiences."
Customer Options
Customers who are dissatisfied with the new plan can choose a different T-Mobile plan or switch to another wireless provider.