1. Find "Mobile networks"
Slide two fingers downwards starting from the top the screen.
![](http://wmstatic.global.ssl.fastly.net/ml/7291123-f-7486cbf9-a585-4936-925d-c719d30bb707.png?width=252&height=402)
Press the settings icon.
![](http://wmstatic.global.ssl.fastly.net/ml/7291123-f-664ab481-eb75-466a-a00c-bf591602e7d9.png?width=252&height=402)
Press More.
![](http://wmstatic.global.ssl.fastly.net/ml/7291123-f-6c2f1b96-0078-449d-9d8b-e5a6dbb57ecd.png?width=252&height=402)
Press Mobile networks.
![](http://wmstatic.global.ssl.fastly.net/ml/7291123-f-2a7161e7-a581-4d34-a129-5aad57ddfa02.png?width=252&height=402)
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/7291123-f-0d35f21b-73cf-4db3-8d48-42b855f388d8.png?width=252&height=402)
If you turn on data roaming, press OK.
![](http://wmstatic.global.ssl.fastly.net/ml/7291123-f-3b5a4ec8-db24-4cf1-a8b4-11e8202a6f5d.png?width=252&height=402)
3. Return to the home screen
Press the Home key to return to the home screen.
![](http://wmstatic.global.ssl.fastly.net/ml/7291123-f-c2263a6b-50c2-4fca-85c3-e31d0a1a1250.png?width=252&height=402)