1. Find "Mobile networks"
Slide your finger downwards starting from the top of the screen.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-067f6283-d645-4db4-89cb-8f5c86ff6ebf.png?width=210&height=372)
Press the settings icon.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-0dc53ecb-6a0f-4049-a545-b15928ecfed1.png?width=210&height=372)
Press Mobile networks.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-0a3c60b8-c48f-4397-9b8f-8e08a8e1aa3d.png?width=210&height=372)
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-4c313465-1e62-4a8d-b2d9-404cc3631b92.png?width=210&height=372)
If you turn on the function, press OK.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-2c98ddb2-21a6-42a1-ace4-50c64683ab17.png?width=210&height=372)
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-4c313465-1e62-4a8d-b2d9-404cc3631b92.png?width=210&height=372)