1 Find "Mobile networks"
Slide your finger downwards starting from the top of the screen.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-33f8c6b1-6329-4cf3-9d93-2b3879216894.png?width=212&height=376)
Press the settings icon.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-57e4395c-52a0-4f24-9bb1-4d9df13b7866.png?width=212&height=376)
Press Mobile networks.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-f7eacd21-d71e-40d7-9f9a-c942e08dfa99.png?width=212&height=376)
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-1e23bf1c-931c-4e24-b549-02c9e41c3ddc.png?width=212&height=376)
Press OK.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-7f3da5d3-3fa9-4c21-9746-c6cf87beebcf.png?width=212&height=376)
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-1e23bf1c-931c-4e24-b549-02c9e41c3ddc.png?width=212&height=376)