Google Pixel 4 XL
Android 10.0
1 Find "Calls"
Press the phone icon.
Press the menu icon.
Press Settings.
Press Calls.
2 Turn Wi-Fi calling on or off
Press Wi-Fi calling.
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.