1. Shpinxis's Avatar
    I am using a Lumia 1520 on AT&T with Windows 8.1 Developer build. My phone is using a lot of data and I have no idea where it is coming from. I turned almost every app off running in the background. I think it is Cortana that is causing it, but I haven't tested it. Any ideas why my phone is using a lot of data every time I turn my data on? Thanks.
    07-09-2014 08:52 PM
  2. juanitoriv's Avatar
    07-09-2014 09:00 PM
  3. berty6294's Avatar
    Open Data Sense then swipe over to Usage. It will tell you exactly how much data each of your apps are using over both WiFi and data.
    07-09-2014 09:01 PM
  4. Shpinxis's Avatar
    I think the culprit is Cortana because it seems like it would be the only app that is constantly running in the background and using data. The data sense doesn't show a anything that is using an extreme amount, more then usual.
    07-09-2014 09:06 PM
  5. berty6294's Avatar
    Data sense tells you exactly what's being used by each app (Cortana too). There's no need to guess!
    07-09-2014 09:10 PM

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