1. Find "Mobile network"
Press Settings.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-6fe2cf48-310a-4ec5-8d0d-74b26cc3838e.png?width=208&height=444)
Press Wireless & networks.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-2e6f2f4b-253f-4926-935a-3e95d1a47188.png?width=208&height=444)
Press Mobile network.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-e4cedf10-1e0a-4cf0-9873-fa4bf43e8154.png?width=208&height=444)
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-a27a734e-8b15-4ffc-82ce-38d983f3ab3a.png?width=208&height=444)
If you turn on the function, press OK.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-97dbb9b7-683f-467c-a3ad-e1a8902df9b4.png?width=208&height=444)
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-a27a734e-8b15-4ffc-82ce-38d983f3ab3a.png?width=208&height=444)