I have a problem with my p990 that a little difficult to explain. So, I charged my phone over the night and in the morning battery was at 100%. After I unplugged it, I used it for a few minutes and suddenly it showed that batter is empty and the phone rebooted. The phone started booting, but for some reason it entered in a boot loop. And as I connect the charger while the phone is in this boot loop, it suddenly boots fine and the battery is ok. This happens a few times in one day.
I'm using stock v30 rooted baseband.
Does anyone have any suggestions how to fix this?