Sony Xperia 1 VI
It's not possible to receive voice calls
Solution 1 of 4: Missed calls are diverted too fast
To receive voice messages, you need to divert your calls to your voicemail.
Press the call icon.
Press the menu icon.
Press Settings.
Press Calling accounts.
Press the name of the SIM.
Press Call forwarding.
Press the required divert type.
Key in +447953222222 and press TURN ON.
Press the Home key to return to the home screen.