Why does my incoming calls dont show

[Android Central Question]

My power button turns ringing off then I have to find the little box to see who is calling

 

[B. Diddy]

Welcome to Android Central! Which phone? Are you saying that when you're using the phone and you get a call, you don't get a notification at the top of the screen for the incoming call? And that if the phone's screen is already turned off and you get a call, you don't see the full incoming call screen?