1. Find "Mobile network"
Press Settings.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-1214b363-00bc-4236-ae78-5e4e269c5be2.png?width=206&height=434)
Press Wireless & networks.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-7a1175db-e2af-4bc4-81bc-c0cfad68e1d0.png?width=206&height=434)
Press Mobile network.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-f3262569-a357-49ff-a7ff-8ca19b609c62.png?width=206&height=434)
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-408ea0d3-9825-45c8-a087-944c43bec829.png?width=206&height=434)
If you turn on the function, press OK.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-d3abe2fc-d3d2-4686-8f26-7cbd1a3a36fc.png?width=206&height=434)
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-408ea0d3-9825-45c8-a087-944c43bec829.png?width=206&height=434)