Chosen Solution
After replacing the screen of my iPhone SE the phone is stuck at around 1% (highest I’ve seen it go is 5%). All I did is replace the screen and the only touching of the battery I did was to unplug it so I did fry the screen. I have already tried turning it off and on as well as unplugging and plugging back in the connector to no avail. Any suggestions would help, also if you know how to fix the problem it would be greatly appreciated if you could what I’d need to do to fix the problem. If you need to ask any questions ask away. Thanks, Tom.
Do a thorough visual inspection, preferably with magnification, of the area surrounding the battery connector. There are several tiny SMD components just above the connector. Of particular importance is FL2400, at the top-left of the connector. If it is missing (which can happen when you pry the connector off), then the battery state does not get communicated to the CPU and this can also cause charging issues and fluctuating readings.
