Chosen Solution
Hi i just replaces my iphone screen and now it won’t turn on or off. It stays at the apple logo screen, sometimes with that loop circle. It won’t turn off, go into DFU mode or anything. All the cables seem to be in its place. What should i do? Thanks in advance
You may need to lift the logic board off the battery to shut off the phone. Then you can try to turn the phone on again and see if the issue persists. Use this guide: iPhone 3GS Logic Board Replacement
i have this problem also.. just stays on the circle thing. have removed the logic board and made sure all connections were clean.. do u think its battery related or logic board related??
I have had this some time earlier exactly the same issue. Problem is most likely caused by cable #3 which is not good seated or damaged. Try to start the phone without cable #3 to see if this helps. If it help reseat the #3 cable properly or replace it if neccesarry.
