Sign up ×
Android Enthusiasts Stack Exchange is a question and answer site for enthusiasts and power users of the Android operating system. It's 100% free, no registration required.

I updated my non-rooted Samsung Galaxy S2 from 2.3.5 to 4.0.3.

Now, I recognize a significant decrease in battery lifetime.

Any idea what may cause it and how to get around it?

share|improve this question
This question is extremely hard to answer without any details. At least look at the "Battery" stats in your settings screen and supply some stats on what's using the battery. – pzkpfw Aug 28 '12 at 7:30
I agree - my intention was to ask if this may be a common problem with that Android version or device. – Alexander Rühl Aug 28 '12 at 9:18
Concerning current battery consumption - I see 50% for the screen (allthough it's off for most of the time) and 25% for Android OS and no application with significant consumption. – Alexander Rühl Aug 28 '12 at 9:20
It's normal for the screen to use most of the battery, if the Android OS takes a lot even in standby you should probably try a factory reset/clean install. – pzkpfw Aug 29 '12 at 12:08
This could be caused by WakeLocks (see: How to deal with (orphaned) WakeLocks?). Please check at least your battery usage screen for the indicators described in that questions answer; if they match, follow the steps there (and let us know here). – Izzy Dec 22 '12 at 14:11

Your Answer


By posting your answer, you agree to the privacy policy and terms of service.

Browse other questions tagged or ask your own question.