1. Find "Mobile networks"
Slide your finger downwards starting from the top of the screen.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-e0586a8c-55e3-406f-89d6-133c37164014.png?width=202&height=362)
Press the settings icon.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-34dfd033-4867-4e2c-b85c-6c3fd978547f.png?width=202&height=362)
Press Connections.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-b5f4078f-802a-4bf1-beb4-5a8ae5e64c6b.png?width=202&height=362)
Press Mobile networks.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-41aaff13-203c-44b4-a0b7-f6b2809b4f6a.png?width=202&height=362)
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-b706fd03-3368-4fda-afe9-1c273d8a01fa.png?width=202&height=362)
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-b706fd03-3368-4fda-afe9-1c273d8a01fa.png?width=202&height=362)