My issue is similar. I'm pretty sure the problem is related to the screen not fitting properly into the frame. The screen is bent very slightly (light is leaking along the sides) and the LED seems to be separating from the glass. Or it could be a pressure sensor issue? Mine worked before I tried gluing it down. It also worked intermittently before I put it into a snap case. At one point it told me to close the cover for the charging port which was already shut. That's what made me think pressure sensor. I'm going to have to try re-adhering both the front and the back and clamping them. Wondering if I should buy a new frame, but I'm kind of sick of dealing with it.