1 Find "Wi-Fi calling"
Press the phone icon.
Press the menu icon.
Press Settings.
Press Calling accounts.
Press the name of the SIM.
Press Wi-Fi calling.
2 Turn Wi-Fi calling on or off
Press the indicator 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.