Cant answer Incoming Calls in Android 6.0

[Android Central Question]

Please help me! I couldn't attend my incoming calls when it's ringing. Nothing displaying either to answer or decline. Seems to be some settings changes required.

 

[B. Diddy]

Welcome to Android Central! Which phone? Are you talking about when the phone screen is asleep, or when you're on the homescreen or using some other app? If you get a call while you're actively using another app, do you at least see a notification at the top of the phone for an incoming call?