Why don't I have any incoming dial tones and no missed call notifications after Lollipop 5.0.1 update?

[AC Question]

No Incoming dial tone and no missed calls notifications after lollipop 5.0.1 update

Since updating to Lollipop 5.0.1 My phone does not ring or vibrate for incoming calls.
I replaced the telephone speaker but that did not help.
Also I no longer receive notification of missed calls on the lockscreen.
I have spent many hours on the Internet trying to solve this problem and I know that all my settings are correct. I have set all my messaging apps to Priority Notifications but I still don't receive any notifications from those apps.
My provider told me that my problems are caused by the Lollipop update and that I will have to wait for the next update before my problem is solved.
Can this really be true?

 

[B. Diddy]

Re: No Incoming dial tone and no missed calls notifications after lollipop 5.0.1 update

Welcome to Android Central! Which phone, and which carrier? Did you receive the update over-the-air from the carrier, or did you manually install it?

Have you tried Safe Mode? Safe Mode temporarily disables all 3rd party apps. On most Android devices, while powered on, press and hold Power until the Power Off menu appears. Press and hold the Power Off selection until the Safe Mode prompt appears. Tap OK. (It's different if it's a Samsung phone, so let us know what you have.) If the problem disappears in Safe Mode, then something you installed is causing the problem. You may have to uninstall apps one by one until the problem disappears. If the problem persists in Safe Mode, then it's more likely to be a problem with the system update.

If you got the phone from your carrier and accepted an over-the-air system update that they pushed, then you should ask them to fix this problem, even if it means replacing the phone at their expense​. Let them know that the phone was working fine before the update that they pushed for their phone caused it to become useless as a phone. If the low-level reps say they can't help, politely ask to speak to a supervisor, and keep going up the ladder. Good luck!