1. From the home screen, swipe down from the Notifications bar.
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  2. Tap the Settings icon.
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  3. Tap Data usage.
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  4. Data used for the current time frame will be displayed.
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  5. To set a limit on the amount of data used, tap Set mobile data limit.
    device 2477/1212437.jpg
  6. Tap OK.
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  7. Touch and drag the Limit tab up or down the graph to limit the amount of data able to be used.
    device 2477/1212439.jpg