Chosen Solution
Was at the gym one day and while listening to music my phone decided to cut off. After it restarted it was on for about 3 mins and then rebooted again. After it rebooted it just constantly kept on rebooting. Took awhile to put it into dfu mode and restored it but that only made it work for about an hour. Opened it up and popped the battery cable as well as the screen connectors. I replaced the screen about 5 months ago maybe there was a bad connection. Put it back together it worked once again for about an hour or so and rebooted. The screen went white with lines for about 5 mins and then cut off completely. Let it sit for about a min it turns right back on like nothings happened to it. Hour goes by and it reboots again. Any answer on the possibility my screen just crapped out on me and needs to be replaced? Could the battery cause this issue?
You said you replaced the screen about 5 months ago. When doing a screen replacement for the iPhones 6 plus its very important to put back the screws back exactly were they originally if not you could do damage to the logic board with the wrong screw which causes your screen to reboot and not wanting to work correctly. You would have to remove the logic board and use a microscope to see if there is any visible damage and if it is then you have to use very thin copper wire to solder the broken connection and that will fix you’re rebooting issue. Also could be a defective battery which needs to be replaced that would be the most cost effective and easy way to isolate the battery being the issue. I hope this helps you, if you have any other questions let me know.
