How to stop 4G switching to 3G iPhone

Voice & Data When 5G speeds don’t provide a noticeably better experience , your iPhone automatically switches to LTE, saving battery life. 5G On: Always uses 5G network when it’s available. This might reduce battery life.17 Mar 2022

Because 5G waves don’t travel as far as 4G ones, sometimes you might see a 5G signal indicator, while getting 4G speeds. This is because the phone is accessing the network through the 5G cell site, but is outside the reach of the 5G network , so has automatically switched to 4G instead.

Will 5G replace 4G? 5G isn’t replacing 4G any time soon . In fact, they will coexist and work together. 5G capable phones can actually use both 4G and 5G technology.