Chosen Solution
I have a iphone 5, it was dropped now it turns on sometimes, sometimes it shows battery icon with one red line then turns on to IOS, sometimes wont do anything when power button is pressed. When its apart with lcd laid on top of frame it seems to always work then once reassembled it acts up again. Once it stops turning on usually connecting it to a computer can get it to turn back on. I’ve tried changing Sync connector and loud speaker, and I’ve tried a reset and still issue persists any ideas would be greatly appreciated thanks
You haven’t tried a battery change? Try that and see what happens.
Oh oh oh oh oh.. this is awesome. I have a similar issue like you. Here’s my (sort of) fix. Hold your phone in your hand, then hit it against your other hand. Hit it so the charging port hits against the palm of your hitting hand. My issue is everything works 100% however my battery doesn’t charge unless I hit my phone like this. I’d say we essentially have the same problem. Sadly yours sounds more severe. You don’t need to change the battery. Charging but % doesn’t go up, UNLESS bump my phone. (Still-Not-Solved)