1. Find "Mobile networks"
Slide your finger downwards starting from the top of the screen.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-dfed505a-0f13-42b2-a92b-ffbb1186e200.png?width=206&height=368)
Press the settings icon.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-6d224c89-1053-4fd0-82eb-b0fd40c1cc6d.png?width=206&height=368)
Press More.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-f1224abd-474e-47e9-9282-4563d181402b.png?width=206&height=368)
Press Mobile networks.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-3b60a89c-7ca4-459f-a671-4877a5c79d96.png?width=206&height=368)
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-eb14f180-229d-4efe-8f95-ab17f7a0f8c2.png?width=206&height=368)
If you turn on data roaming, press OK.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-8fb9fe8b-35ce-46a7-820f-efd8f6d80a78.png?width=206&height=368)
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-eb14f180-229d-4efe-8f95-ab17f7a0f8c2.png?width=206&height=368)