Turn off 5G on iPhone by opening Settings, tapping Mobile > Mobile Data Options > Voice & Data, and selecting an alternative connection. Your iPhone will automatically turn off 5G if a 5G tower is unavailable . Only iPhone models in the iPhone 12 series and above support 5G.23 May 2021
Read moreCan I turn off 5G on my iPhone 12?
Open the Settings app then go to Cellular > Cellular Data Options > Voice & Data and tap LTE . Your phone will then turn off its 5G connection, reverting to (sometimes) slower LTE connection.30 Eki 2021
Read more