Hi!! My Lumia 1520 is continually rebooting since I try to change the transparency of the tiles... If I turn off the start screen, the phone reboots!!! I disabled in lock screen settings the option to turn off the screen after xxx minutes, it looks like if the screen is if the display is turned on the phone does not restart, I change the color of the theme, disabled the tile background, the transparency of tiles...Any solution??? I think that I have read someone with the same problem... If I don't solve it, when the phone is full charged, return to 8.1. Thanks!!!