1. Find "Mobile networks"
Slide your finger downwards starting from the top of the screen.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-0be69685-54fb-49e1-a5ad-a17af613e1be.png?width=216&height=386)
Press the settings icon.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-dfa46dcc-d65b-4921-a381-050a7fe81d44.png?width=216&height=386)
Press Mobile networks.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-48b62435-97fb-4539-b901-3c7179bb6b8c.png?width=216&height=386)
2. Turn data roaming on or off
Press the indicator next to "Data roaming" to turn the function on or off.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-4a9f35db-018c-4048-ac47-3fc2afc3d962.png?width=216&height=386)
Press OK.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-160a926b-73cf-4bb8-a8cf-7d2cd7f9280c.png?width=216&height=386)
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-4a9f35db-018c-4048-ac47-3fc2afc3d962.png?width=216&height=386)