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If you’re on a limited data plan, you probably want to do everything you can to limit your cellular data usage. One way to know exactly where your data is going is to keep track of how much data each app uses. Luckily this is really easy to figure out in iOS.
For Installed Apps
To find out how much data installed apps are using, go to Settings > Cellular. Here you’ll find a list of all the apps using cellular data. Underneath each app name, you should find the exact figure used by the app in alphabetical order.
It would be nice to be able to rearrange the list by data usage, but you can scroll through the list and see where most of your data is going. (This can also give you a better idea of which apps you are using a lot.)
If you find a specific app is using more data than you like, you can switch off data usage for that app, allowing it to depend entirely on Wi-Fi networks.
For Native iOS Apps
To find out how much data native Apple apps are using, go to Settings > Cellular > System Services. (You will find this at the very bottom of the screen.) You can then see how much data iMessage, Apple Maps, Siri, iTunes, Exchange accounts, Voicemail, your home screen, and more are using.
How do you make sure you don’t get hit with a data overage every month? Let us know in the comments.
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