Not exactly correct but didn't know how to title this problem. About every 2 minutes my home screen illuminates for about 15 seconds and then goes dark again. 2 minutes later it does it again, and again, and again. This has been going on for about 4 days now and I don't know why. At first I thought it was the facial recognization, but even with that turned off it keeps doing the same thing. I turned off wifi and then turned on airplane mode and it is still coming on and then going off.