My phone is working but display is dead.

Hey guys i own a MI8 EXPLORER EDITION, and my screen went completely black.

I was talking with my buddy on my phone and by screen went off, i thought it was the proximity sensor but it wasn't that, i could still use the face scanner, the touch was working, the speaker was working, the microphone was working, the camera was working every thing was working except the display.

I didn't drop my phone or damage it in anyway.

I would really appreciate it if someone could help me through this its very difficult for me to not have a phone to use.

Thanks.

Arco-