1. Find "Mobile networks"
Slide your finger downwards starting from the top of the screen.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-90800315-078b-4e39-9d48-c52467d6d778.png?width=210&height=350)
Press the settings icon.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-cc2e927c-f643-4f32-82fd-86a5ffcde815.png?width=210&height=350)
Press Mobile networks.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-125e877c-2af8-424b-8cfe-72b484006a27.png?width=210&height=350)
2. Turn data roaming on or off
Press Data roaming to turn the function on or off.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-4980814c-d548-4128-8b9f-c937f600f458.png?width=210&height=350)
If you turn on the function, press OK.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-dfcf8fe3-aaa4-4d90-9a61-0e2e3d99d4ce.png?width=210&height=350)
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-4980814c-d548-4128-8b9f-c937f600f458.png?width=210&height=350)