So I know this is a bit of a long shot since support for this phone is so poor, but I was hoping to see if anyone has had experience replacing the battery or charging port themselves and maybe advise if that's what I need to do in the first place.
On update 22 which seems to be part of the issue, but the battery is unable to last half a day without dying. This is after a factory reset and most apps have been cleared except for basic functionality. Add on top if it, it has been difficult to even get the phone to start charging. Requires plugging in, sound triggers that it's charging but no charging indicator turns on and percentage doesn't go up. Adjust with different pressure a few times, sometimes indicator turns on to turn back off soon after. Eventually able to get it charging though.
So questions: Would I need to replace the battery and port? One or the other? Any pointers to how I go about doing this? Also, is it possible to downgrade from build 22?