Display and touch doesn't work
Hi, i have a problem with my iphone 4 gsm. after a fall the screen went black and it broke. I replaced the display (I've tried 3-4 of them) but the problem is that you see a central oval clearer and the rest black with some lines and halos but no system image. There is something that probably should not be. help me please. thank you
Is this a good question?