1. Find "Mobile data"
Press Settings.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-985dac77-368a-492b-9682-7a60edcd8e6b.png?width=208&height=450)
Press Mobile network.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-cf96b932-3731-4e02-b582-303eb673f874.png?width=208&height=450)
Press Mobile data.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-adb0b82d-df48-41fb-ba24-345acf6bd087.png?width=208&height=450)
2. Turn data roaming on or off
Press the indicator next to "Data roaming" below the required SIM to turn the function on or off.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-315aaa6d-0dbf-4bf0-86c3-10a8e3fa7a85.png?width=208&height=450)
If you turn on the function, press OK.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-4ce1e463-dcb4-47ce-912f-72862942c127.png?width=208&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-adb0b82d-df48-41fb-ba24-345acf6bd087.png?width=208&height=450)