Problem : LCD is shattered, has a major scratch, backlight bleeding or the touch is not working. This could be caused by an impact or if your iPhone is exposed to excessive heat for a prolonged period. Solution: In this case the LCD unit has stopped functioning the way it is supposed to, so the only feasible solution is to replace it. Once again, opening the iPhone, ensuring the safety of delicate chips and wiring inside and replacing the LCD unit in the right manner requires a specific set of expert skills. Not to mention an ESD protected area that would avoid any sudden electrostatic discharge and destroy the device. Therefore, it is recommended for you to call iRepairApple and have professionals resolve the problem.