Post originale di: HackerZero ,
ty paul l daniels!! i tried everything (hard reset, run out of battery, check the connectors of the display unit, replace the display unit) and finally the touch unit didnt work also (within the first days it worked and i could answer calls). the main problem was that i even could not do sync&backup my phone because i have a passcode and itunes did not let me doing this w/o typing the passcode when initializing this procedure. i found your solution and I tried the home/up/sleep combo and it came back to life (even the touch unit). thanks a lot!!