Chosen Solution
Hi Sam. This problem seems to be occurring with more frequency lately. Are you getting any iTunes error messages (9, 4013, 4014 etc)? It’s hard to say if it is software or hardware related as many things can cause similar symptoms. I’ve had a few 6’s that have pretty much the exact same problem. I tried everything as well, including replacing U2 and reballing the NAND. However, once all of the standard fixes have been tried and based on the research I have done, it may be related to a corrupted NAND.
The actual fix:
- Power the Phone off (or wait for it to die)
- Open the phone
- Disconnect the internal battery
- Hold the power and home buttons down for 10-15 seconds
- Reconnect the battery and close the phone back up.
- Plug into power and the phone should be working.
- Do a battery calibration.
I also had the same symptoms as above, and tried some of the solutions also. What worked for me is putting the phone in recovery mode and restoring the phone with the latest update\firmware. I used 3utools and created a back up file to select from. Because naturally the phone was attempting to restore its self to ios 10 which apple stop signing this firmware. So it thinks you are downgrading your IOS which is a security flaw apple tries real hard to prevent you from doing.. I had 2 of the same exact phones. So it was easy for me to trouble shoot.. But when I swapped out motherboards on a phone I knew had full battery. It drained it almost instantly.. So i knew it was software related. And itunes will read 4013 error which is related to security and NAND IC. and if your phone is so corrupt you cant accsess DFU OR RECOVERY MODE. Only option is to remove the NAND AND PROGRAM IT. OR GO TO ALIEXPRESS and look for them programmed and balled. Installl it.. Charge up your phone and power on.. I also corrected one before by rebooting at the system level..
My phone is saying something about dianostics and to go to apple to get support or repair
