iPhone 7 cannot receive calls or incoming calls. Call failed, did my update 12.
any Helpful suggestions
If you are unable make a call or receive; If you can't make or receive calls on your iPhone - Apple Support
If you are not able to hear the other person, click this...>If you can't hear a person on a call or voicemail or if the sound isn't ...
If the other person is not able to listen to you then please click this--> If the microphones on your iPhone, iPad, and iPod touch aren't ...
If the above options do not mitigate the issues then Contact your carrier and then Contact Apple Support