Chosen Solution
The screen does not turn n but every few seconds it vibrates and along with that the screen flashes a small line of light on the right side. This line of light that flashes when the phone does that vibrate thing is only 3/4 of the screen and the line is very thin, about the size of a pencil head. Please help
Try holding down the home screen and power button at the same time and hold it. I had the same problem and this helped.