Why does my iPad Pro restart seemingly randomly, even when plugged in?
I have a 12.9-inch iPad Pro (1st gen I believe) that I like to use for sheet music. However, it suffers from the problem where it restarts, seemingly out of nowhere. After it reboots, the battery displays at 1% before going back to whatever level it was at before. This problem persists even when the iPad is plugged in or is at 100%. Besides this restarting issue, everything else seems to work fine.
The problem seems to happen less if I go for a long period of time (e.g. a week or more) without using the iPad, but as I use the iPad, the problem happens more and more often, eventually to the point where it does this around once a minute, making the iPad basically unusable.
I can try to record on video such a restart happening, if that would be of any use.
I visited an Apple store with this issue and there were no conclusive results.