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?


If you are rooted, you can try this.

  1. In CWM recovery, Advance -> Wipe battery stats
  2. Reboot and drain the battery fully
  3. Recharge the battery 100% without any interruption

If you are rooted, wipe battery stats by using the battery calibration app on Play Store. If not, then I suggest taking it to the device center because it looks like your phone's battery has got old and lost its retaining power/actual capacity has been reduced. Or it may be a ROM issue, I can't tell because you didn't mention the manufacturer's name.

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy

Not the answer you're looking for? Browse other questions tagged or ask your own question.