Latest iOS 9 on my 5c

[Burnt Toast]

hi all , im running the latest iOS 9 on my phone and have this bug were the screen goes black when there is a person ringing me.

 

[Burnt Toast]

I can only answer it by pressing the home button .

 

[scifan57]

Have you tried rebooting the iPhone? Press and hold both the power and hone buttons until the Apple logo appears, then release both butt one and wIt for the iPhone to restart.

Does the iPhone operate normally with the exception of this one problem?

 

[Burnt Toast]

havent tried the reboot yet , will that .
phone seems to be fine with everything else