My phone fell on the floor and after the fall the glass on the back was shattered, but the display didn't show any visible damage. The phone still worked, though. After a short time I noticed that the lower part of the touch display was "deaf", no longer responding to touch. Further later, areas of the lower display stopped working and remained black. I shut down the phone and started it again the next day and since then the display is completely black and also the backlighting of the buttons doesn't work anymore. I opened the phone and checked all the flex cable plugs, unplugged and plugged them in again, but it didn't work. I also tried to boot the phone into recovery mode but also no effect.
Do you have any suggestions what else I could try?