1 Find "SIM card & mobile data"
Slide two fingers downwards starting from the top of the screen.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-a92c050c-dd0a-4b29-81f0-ae33f5cc412d.png?width=202&height=450)
Press the settings icon.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-837bfca8-e594-489c-b218-dea0792a66ce.png?width=202&height=450)
Press SIM card & mobile data.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-6a32b7c8-87ef-445c-b343-e1643d62e46d.png?width=202&height=450)
2 Turn data roaming on or off
Press the required SIM.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-57a7ea13-da26-4aae-be91-7d24488bddd2.png?width=202&height=450)
Press the indicator next to "Data roaming" to turn the function on or off.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-cbac6ce2-2415-4738-8a7e-6fa6d22cd41d.png?width=202&height=450)
If you turn on the function, press Turn On.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-92efaabf-0523-4d69-bcba-3619996ba5bb.png?width=202&height=450)
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-cbac6ce2-2415-4738-8a7e-6fa6d22cd41d.png?width=202&height=450)