Chosen Solution
So, after I installed a new battery and display with parts from iFixit, charged the phone, (touch screen appeared to be working great), completed restore from iTunes backup- –restored worked, iOS and apps updates worked, phone felt a bit warm – then self shut down to the white apple screen and rebooted on its own. Now does that every two minutes. Can’t use. Tried hard reset. No effect. My iPhone had a cracked corner from a not-so-hard drop from the table. No water/liquid damage ever, just the crack. Decided to replace the battery as this iPhone 5s seemed to not have good battery life – phone is about 2 years old. All original, no service to date. It is the parts from iFixit? Me? My restore? Ideas?
To start with. You can use 3Utools on computer while the phone is on to check battery health accurately. First thing I would do is try the old battery if it’s still usable to see if it has the shut down issue. If it doesn’t then the replacement battery is faulty.
