OnePlus Nord
Android 11.0
Select help topic
1. Find "SIM & Network"
Slide two fingers downwards starting from the top of the screen.
Press the settings icon.
Press Wi-Fi & Network.
Press SIM & Network.
2. Turn Wi-Fi calling on or off
Press the required SIM.
Press the indicator next to "Wi-Fi Calling" to turn the function on or off.
3. Return to the home screen
Slide your finger upwards starting from the bottom of the screen to return to the home screen.