Blackberry Q20 Screen went Black
Today i went sleeping keeping my q20 under the pillow. Everything was fine then with my phone. But when i woke up i tried to check the the time in my phone. But the screen was totally black and the key light was lighting. Then i power off the phone and then turn on. I noticed a flick at the display for a millisecond and then it went black again. Every time i restart the phone this flick happens and the screen went black again. But the keyboard light is still working. What could be the possible error with my phone?