In terms of unreliable charging, maybe you have already done it but: clean the lightning port. They did it at the apple store for an unrelated repair and all my

In terms of unreliable charging, maybe you have already done it but: clean the lightning port. They did it at the apple store for an unrelated repair and all my issues went away. A year later i even went back and had them do only that because I couldn‘t find a good tool to do it myself.