I charge my phone running Android 4.1.2 at night, wake up in the morning, pull it off the charger, about 9-10 PM it drops to about 15%. It will sit at 15% for 2-3 hours without losing a single percent, so I thought why not reboot my phone, and what happened shocked me. I expected it to suddenly be at 1-5% after reboot, but it wasn't, tonight it was at 33%. It went from 15% to 33% after a reboot.
I have tried letting it run all the way down then charging it completely back up to 100% and this seems to have no effect.
This isn't really a big issue, but I just wanted to know if this is normal behavior or a software bug? Does anyone know of any way to possibly make the indicator more accurate?