Phone Notifications Silenced

[Al_ZA]

I have noticed that whenever phone calls come in, it doesn't wake the screen up to show the incoming number. I'd have to unlock the phone, swipe down to reveal the notification bar, tap the call event and then select to answer or reject the call.

In my notification settings, it seems the phone app is "silenced" and i cant figure out how to unsilence it. 

When restoring the phone to factory default state, the problem is gone, but whenever I restore from backup it returns.

Screenshot (hopefully) attached.

Cheers

Al

[ADDe1972]

Still problem persists. Request to help

[Borobev]

Thank you as I had same problem for months. Reading your post sorted it out stright away so thanks.