My phone black out but it still vibrating and still ringing when someone gives me a call. I was about to open my facebook application and it did not open I even tried to open instagram and it did not open
I was trying to open my facebook application but it is not opening, so I tried to open my instagram application but still it did not open also. I decided to lock my phone for a while since I guess the applications might have crashed. When I was trying to open my phone it did not open as in black out. But when I tried to call my phone, it is still vibrating and ringing but no alarm in my screen (still black out).
iPhone 5s, iOS 8.4.1