Recently I had some issues with my phones battery getting drained in 8-10 hours, even though the screen was active for less than 1 hour and wifi/bluetooth/gps was off.

My first thought was to check the battery usage statistics, but all I saw was the display, voice calls and cell standby, and after that a few apps that I commonly use (such as the browser).

Still suspecting an app hogging the CPU I used applications such as a task manager and watchdog to try to find the culprit, but no luck. I then looked around here and found a couple of answers referencing to the awake time. Looking at battery usage again I could see that indeed the awake time was around 75% of the total time since last charge, i.e. some app was preventing my phone from going to sleep. I uninstalled a couple of apps I don't use anymore and lowered settings for email checks etc, and now my awake time is down to normal levels.

My question is, is there any app/secret number/trick/whatever that can show exactly what has awaken my phone? In the battery usage statistics I can still see that sometimes the phone wakes up even though the screen is off, and that is normal, but if I ever get this problem again (and I'm sure I will), this would be a very valuable tool for trouble shooting.


I'm using Better Battery Stats. It will shows what apps are causing wake locks and that sounds like what you're after. http://forum.xda-developers.com/showthread.php?t=1179809

  • Perfect, just what I was looking for, thanks! – Andreas Ågren Aug 6 '11 at 7:28
  • The problem came back. Thanks to the app you pointed me to I managed to find out that the app Improved Email wakes up the phone quite a lot, even though I've set it to only check once pet hour. I installed that when I used froyo because the stock email app used to lag a lot. However that seems much better now in gingerbread, so I'm using that instead, awake time seems good now. – Andreas Ågren Aug 6 '11 at 15:35

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.