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I installed Cyanogenmod on my HTC Desire about a month ago and have just received my first mobile bill. Before installing Cyanogenmod, I'd use maybe 200-300MB per month, because most places (home/work) I spend time have Wi-Fi that I can use. I have scheduled downloads of podcasts over Wi-Fi, configured to only use Wi-Fi (BeyondPod)... although I found that this setting had been unset when I changed from having 2 accounts on the phone (one Google Apps and one not) to just having 1 (Google Apps)... so I guess the preferences had been saved under the account I removed.

Have had just received my first bill since I changed to Cyanogenmod and I've apparently used 4GB of data! That's going to cost me over $100 extra, so I'm not best pleased.

Some points/thoughts/questions...

  • I have Wi-Fi and mobile data enabled all the time.
  • Podcast downloads were scheduled for 4am so, even with the "only use Wi-Fi" option disabled, it should have downloaded over Wi-Fi at that time as I spend nearly every night at home and therefore on Wi-Fi
  • Sometimes when I unlock the phone, I see the mobile data symbol on screen briefly as well as the Wi-Fi one.
  • Is there a setting somewhere that is turning off Wi-Fi when the phone is locked?
  • Is there a way I can prevent the phone from using mobile data when it's connected to Wi-Fi... and how do I make sure it's connected to Wi-Fi as much as possible?
  • Anyone got any tips/tricks to share for this scenario?
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1 Answer 1

Reset to default
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Go into the Wi-Fi settings, press Menu, choose Advanced. You should get options including Wi-Fi Sleep Policy. Sounds like its set to turn off Wi-Fi when the screen is off.

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  • Yes, it was set to sleep when the screen was off - I've now set this to never sleep. Hopefully that doesn't mess up my battery life too much, it was already pretty crappy. I turned mobile data off altogether yesterday and my podcasts updated overnight, so they must have gone over wifi... so not 100% sure this is the cause, but thanks for the pointer, will see how it works out.
    – x3ja
    Commented Nov 7, 2011 at 18:23
  • That seems to have fixed it, thanks for the pointer. Also battery life has improved a lot with turning this setting on... I guess 3G uses more than wifi...
    – x3ja
    Commented Nov 15, 2011 at 18:12
  • Thank you so much! I was wondering why I was consuming data around the house (where there is a WiFi connection available). Sure enough... WiFi was set to turn off when the screen shut down unless the 'phone was plugged in.
    – Richard J Foster
    Commented Dec 12, 2011 at 15:13

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