T-Mobile is automatically moving customers on older phone plans to its current lineup, according to reports. The carrier has begun notifying affected subscribers that they'll be transferred to modern plans during their next billing cycle. Thousands of customers are impacted, though T-Mobile hasn't specified which legacy plans are being retired.

Customers face potential bill increases with the transition. The carrier offers several plan tiers including Essentials, Essentials Saver, Experience More, and Experience Beyond, with single-line pricing starting at $50 per month. While costs could rise, T-Mobile marketing lead Allan Samson indicated most customers will pay less than full retail price, with average increases around $4 per line per month.

The move aims to eliminate over 1,100 legacy billing codes that have accumulated over the years. Some plans being retired date back 15 years, and Sprint customers were integrated into T-Mobile following the 2020 merger. Employees were warned to expect higher customer service volume as subscribers process these changes.

Affected customers can choose different T-Mobile plans or switch carriers entirely if they disagree with the transition. Changes take effect at the start of the next billing cycle, giving subscribers time to make alternative arrangements before their service is altered.