1. Find "Mobile networks"
Slide two fingers downwards starting from the top of the screen.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-57c6043a-b9e4-4e32-9587-52130c062072.png?width=198&height=444)
Press the settings icon.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-82d999c2-5484-4a11-b35e-f182512a9e1e.png?width=198&height=444)
Press Connections.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-aea3d2c5-f3b4-48d4-a82c-f81789d7f652.png?width=198&height=444)
Press Mobile networks.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-76bbcfaa-4e91-4d7d-abc3-2fe347cc3ed9.png?width=198&height=444)
2. Turn data roaming on or off
Press the indicator next to "Data roaming ‹SIM›" to turn the function on or off.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-0410a064-cae3-43f2-b14a-ae1a44003557.png?width=198&height=444)
3. Return to the home screen
Press the Home key to return to the home screen.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-0410a064-cae3-43f2-b14a-ae1a44003557.png?width=198&height=444)