My windows phone is around 1.5 years old. But very recently I found my phone run out of battery within 12 hours. I guess tt could be one of the app that I installed is running numerous background tasks. I turned off all apps except Cellular Data under Settings -> Applications -> background tasks. But under Advanced I could see more apps including which I cannot control their background tasks. So, is there a way (or an app) to find out which app is trying to perform more background tasks at less interval?


No, there isn't. Background tasks are very limited in how many resources they can consume. Microsoft worked very hard to make sure they wouldn't drain your battery. What tasks do you have listed?

Odds are it is something else. How many email accounts do you have? How often do they sync? Are you talking alot? Playing music? It is possible the battery is just shot, and you need a new one.

  • I think a background task can run only for 30 seconds. Jun 24 '12 at 11:47
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    @VitorCanova - It's currently 25 seconds Jun 25 '12 at 2:10
  • 1
    I found the problem. As Joe has suggested above, one of my mail account was set to sync "as they arrive". I changed it to synch every hour, and now I can go 2 days without charging my battery.
    – franklins
    Jul 17 '12 at 3:48
  • If the email account is a POP3 account, I've seen behaviour in the past where the battery usage is proportional to the number of items in the mailbox, as well as the number of new items you recieve.
    – Rowland Shaw
    Oct 23 '15 at 15:50

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