Hello! I dropped my iphone 4 and I was pretty drunk so I dont remember where I dropped it, if it got into any water or just on the ground. Anyway, the glass got broken and the backlight is very weak, it lights correctly at some "pixels" of the screen, but stays pretty dark on others. It's enough so I can see the screen if I have sunlight avaible. I wonder if it would help just to replace the lcd? Or what could be wrong? I have replaced the screen before because of broken screen, so wont be a problem to do it again, but just dont want to buy a screen if that aint the problem. Thanks for help!