Sony Xperia 10 IV
Android 12.0
Select help topic
1. Find "Network and Internet"
Slide two fingers downwards starting from the top of the screen.
Press the settings icon.
Press Network and Internet.
2. Turn VoLTE on or off
Press the name of the SIM.
Press the indicator next to "4G Calling" to turn the function on or off.
3. Return to the home screen
Press the Home key to return to the home screen.