To set a data usage warning
1Make sure that data traffic is turned on.
2Drag the status bar downwards, then tap 
.
3Find and tap Data usage.
4To set the warning level, drag the warning line to the desired value. You receive a warning notification when the amount of data traffic approaches the level you set.
To set a data usage limit
1Make sure that data traffic is turned on.
2Drag the status bar downwards, then tap 
.
3Find and tap Data usage.
4Mark the Set mobile data limit checkbox if it is not marked, then tap OK.
5To set the data usage limit, drag the corresponding line to the desired value.
Once your data usage reaches the set limit, data traffic on your device will be turned off automatically.
To control the data usage of individual applications
1From your Home screen, tap 
.
2Find and tap Settings > Data usage.
3Find and tap the desired application.
4Mark the Restrict background data checkbox.
5To access more specific settings for the application, tap View app settings and make the desired changes.
Specific settings for an application may not always be accessible.
The performance of individual applications may be affected if you change the related data usage settings.
To view data transferred via Wi-Fi®
1From your Home screen, tap 
.
2Find and tap Settings > Data usage.
3Tap 
, then mark the Show
4Tap the
Mobile network settings
Your device automatically switches between mobile networks depending on what mobile networks are available in different areas. You can also manually set your device to use a particular mobile network mode, for example, WCDMA or GSM.
To select a network mode
1From your Home screen, tap 
.
2Find and tap Settings > More… > Mobile networks.
3Tap Network Mode.
4Select a network mode.
To select another network manually
1From the Home screen, tap 
.
2Find and tap Settings > More… > Mobile networks > Network operators.
3Tap Search mode > Manual.
4Select a network.
If you select a network manually, your device will not search for other networks, even if you move out of range of the manually selected network.
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