Chosen Solution
Hi Crew. I got an iphone 8 in for repair, and it seemed pretty straight forward. Replace the battery. Cool. started by disconnecting battery from the board. I heated up the back a little bit to loosen the adhesive and pried up the batter. I installed the new battery, and it booted up fine while the screen was off the housing. everything worked fine, so it was time to close it up. I closed the device, and it stopped responding. screen went black, and I wasn’t able to boot or wake it. I lifted the screen, disconnected the battery, and reconnected it. the device worked flawlessly again for 2 minutes. so i closed the device, and again, it stopped responding. I opened it up, put the old battery back in, and it wouldnt even turn on at all. i took the battery to the load tester, and it reads fine, charges fine. now with both batteries, the backlight doesnt turn on, and i only get about 5 seconds of apple logo with no backlight, then it shuts off again. i tried replacing the screen, thinking maybe i tore a flex, but that didnt fix the issue. the device is now stuck in that mode, and i dont know what to do. our customer is rightfully impatient for their device, as they were expecting a 20minute battery change. any help asap would be appreciated.
Can you get the phone in DFU mode, with either battery installed it sounds like you have a software error, or perhaps one of the filters have been damaged on the board, have you tried looking around the battery connection to see if there is any board damage, can you confirm you used the correct screws for the correct holes, seen this issue when the wrong screw is used.
