1. Find "Mobile network"
Press Settings.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-e9b5d0bd-240d-4996-94d6-f6cc7414492c.png?width=206&height=412)
Press Wireless & networks.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-07e6ff99-6b30-4457-8396-f44b950d3d62.png?width=206&height=412)
Press Mobile network.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-bdabbbf3-7b95-4582-86d0-80f0d2c24a37.png?width=206&height=412)
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-0ed29668-04b8-480a-a945-8159ad2e9121.png?width=206&height=412)
If you turn on the function, press OK.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-862c5361-ad90-47b8-9b5c-399dd7405426.png?width=206&height=412)
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-0ed29668-04b8-480a-a945-8159ad2e9121.png?width=206&height=412)