iPhone 4 not starting
I have seen this happen 3 times now. iPhone stops working suddenly - it just goes dead and whatever you do, you cannot boot up. Tried following: Long pressing lock button (on top). Use special screwdriver and remove the screws near speaker and blow. Try to connect to your MAC/Windows and see if it gets recognized in itunes/drive. None of the above worked. Simple solution to fix is: Press Lock & Home Button together for 10 to 15 secs. Apple icon should come up :-)