I have problems making WiFi calls on my Nothing Phone (1)

Press the phone icon.

Press the menu icon.

Press Settings.

Press Calling accounts.

Press the required SIM.

Press Wi-Fi calling.

Press the indicator next to 'Use Wi-Fi calling' to turn the function on or off.

Slide your finger upwards starting from the bottom of the screen to return to the home screen.

Slide two fingers downwards starting from the top of the screen.

Press the settings icon.

Press System.

Press System update. If a new software version is available, it's displayed. Follow the instructions on the screen to update the phone software.

Press and hold the Side key.

Simultaneously, press and hold the Bottom volume key and keep them both pressed until your phone restarts.