Chosen Solution
Please help! I replaced my battery with an iFixit battery today, and put everything back together. I tried turning on the phone, and it didn’t come on, so I assumed it was dead. I plugged the phone in, and it immediately started a bootloop cycle. Turns on, goes to the Apple logo screen, waits 15-20 seconds, turns off for 5 seconds, then back on. It repeats this as long as it is plugged in. Any suggestions? Update (02/08/2018)
here’s a photo
iFixit sent out a new battery, and solved the issue! Apparently, just a faulty battery.
possibly pry damage around the battery connector, you could have possibly pull components off
