Answer to: Black screen after lcd replaceHello, I have problem with new screen too. I bought it on Ali its not original. After detaching old one I tried the new screen if it is working and it was, so i turned the phone off, detached the screen, replaced home button, frontcam flex and other stuff from old to new screen. Connected all cables from screen to mainboard, placed shield over connectors without changing screw lenght, assembled whole phone and then nothing, i cant turn it on, no vibrations even when charger was plugged but itunes recognizes phone and shows, that its locked and neet to unlock with screen password. I was mad about what happend, so i tried to put old screen back and it turns on, vibrates and voice control works (i cant see nothing but backlight on screen because it was damaged after fall) I havent detached battery when replacing new screen, may I shorted the backlight circuit so it will work with new screen? Thanks for respond and sorry for bad english.