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Originally posted by TexasGooner:
I took my work email off completely last night. My phone has been off the charger for 5 hours today, and I've only used it for about 10 minutes and it's at 50%. It says the Android OS is using 60% of the battery. How can this be?

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There is a rogue app keeping your phone from sleeping.  Download the app BetterBatteryStats and CPU Spy.  CPUSpy will tell you right away how much time you phone is spending in each of your processor steps:  https://play.google.com/store/apps/details?id=com.bvalosek.cpuspy&hl=en. 

BetterBatteryStats costs about $3 (to support the developer), or you can download it free from XDA or from here:  http://apk-apps.blogspot.com/2012/03/betterbatterystats-v1700-xda-apk-app.html  (download links below the changelog post).

Once you download BBS, open it and it should give you a summary of how long your phone has been in each state (awake, screen on, wifi on, etc).  Then you can go into each individual state.  The ones you want to check are:

1.  PARTIAL WAKELOCK

2.  Kernel Wakelocks

3.  Other

4.  Alarms

You can select these from the top drop-down box. 

Check them in that order.  If you have any big items with over 10 minutes or so in PARTIAL WAKE LOCK, that will tell you what the culprit is.

It isn't always so cut and dry but sometimes there is a single app acting up.  Last week I SyncMyPix was acting up on me.  Every time Facebook changes their app it breaks SyncMyPix from being able to log in and download your contact pics from Facebook.  I didn't realize it until I checked BBS and saw SyncMyPix basically wasn't letting my phone sleep at all.  that just happened on Saturday.

If you need more help with this offline, e-mail me (user name @ gmail).

This post was edited on 4/30 3:40 PM by dmm5157