For the past 4 days (and nights) my phone and its battery have been acting strange. Last night, for instance, when I put it to charge, the battery was at around 30%. This morning (9 hours later) when I woke up, the charging light was still on (red) and the battery was at 64%! I picked it up to check the news (while it was still being charged) and not 10 minutes later when I checked the battery had gone down to 60%! And it's been like this for 4 days.
I've got WakeLock detector and Greenify, but neither of them is of any use to show which process is keeping the CPU/screen on during charging. I've already restarted the phone a few times, got rid of the most recently installed programs, but nothing has changed.
Can anyone help me figure this one out, please?