1. Find "Mobile network"
Slide two fingers downwards starting from the top of the screen.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-003c5708-e8e3-4c08-aaf7-87391778793a.png?width=194&height=388)
Press the settings icon.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-7ae0f14f-f07a-46be-83e1-87f8ea487c2e.png?width=194&height=388)
Press Network & Internet.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-948ff5c4-136f-41cf-9ab6-fd385562f76e.png?width=194&height=388)
Press Mobile network.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-9904a390-25c1-4802-854e-e1b39fef3de8.png?width=194&height=388)
2. Turn data roaming on or off
Press the indicator next to "Roaming" to turn the function on or off.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-a5563849-a9e3-4746-92e0-a3546d314be9.png?width=194&height=388)
If you turn on the function, press OK.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-b345b045-9e96-4e19-8299-fa6b6a40bada.png?width=194&height=388)
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-a5563849-a9e3-4746-92e0-a3546d314be9.png?width=194&height=388)