Chosen Solution
I bought a replacement battery from iFixit and replaced it with no problems. My phone booted up and worked absolutely fine. I left the battery to drain as instructed in order to calibrate it and then set it on to charge. However, I seem to now be stuck in a loading loop. If not plugged in to power, I get the plug into power screen. When I plug it into power, I see the Apple logo, then a blank screen, then it turns off and returns to the plug into power logo. Can anyone help me to get out of this loop? Thanks in advance
It sounds to me like the battery is not charging; therefore the phone keeps shutting down. iFixit batteries are very good quality but it is still possible that you have a bad one and besides, that is the easiest thing to try at this point. You may want to contact iFixit Support. You don’t say why you changed the battery in the first place…did it suddenly die or was it degrading over time? Battery issues are usually 1) battery, 2) Lightning port, or 3) logic board. You can easily isolate the problem but if i you have a logic board problem (charging circuit), then you will need to find a repair shop that does micro-soldering repairs. Start with the battery though…
