4G is expected to last for at least another decade, and possibly longer with the help of Dynamic Spectrum Sharing (DSS), which shares available spectrum between 4G LTE and 5G devices. DSS provides improved coverage for 5G devices and greater longevity for 4G LTE devices.

Will 4G be phased out?

Many operators use 4G within their networks and worry that the arrival of the fifth generation means that their networks will soon become obsolete. Though this may be true one day, the shutdown of 4G is not likely to happen for at least another ten years.

Are 4G phones going to stop working?

T-Mobile and Sprint 3G/2G/4G LTE network shutdown dates

These are January 1, 2022 for Sprint's 3G network sunset, and June 30, 2022 for the 4G LTE connections, respectively.