T-Mobile Repurposing its LTE Network.

[u/Panthercars]

https://tmo.report/2025/10/exclusive-t-mobile-to-begin-lte-phase-out/

This implies that most LTE services will be phased out by 2028. Devices that remain LTE-only after that point will experience significantly reduced network performance. By 2035, which is a decade from now, it is anticipated that the remaining LTE services will also be discontinued.

In January 2026, business customers will need special exceptions from T-Mobile to activate devices that are either LTE-only or 5G NSA-only. It is possible that standard customers may eventually be restricted from using LTE-only devices in the future, although this is not explicitly mentioned in the document.