Hello Geeksters, I'm working on my nephews iPad 4th Gen in which my brother replaced a cracked screen. After doing so he is experiencing dead spot across the digitizer. He bought an aftermarket screen and it seems to be garbage. Does anyone know why there are dead spots and if this is something that is reported frequently? Is there anyway to correct this problem or do i have to purchase another screen? If i do have to replace the screen again, can someone point me in the direction of a reputable parts place where i can purchase a screen that will work? I plan to install it myself. Thanks for your time and any responses! iPad 4th Gen Ipad Model # MDL512LL/A serial # DMPJFQWSF184 Here in Philly Yo.