1. Find "Mobile network"
Press Settings.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-f77a8e56-b2f6-4fb7-bd8a-668274854c25.png?width=204&height=446)
Press Wireless & networks.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-cb0ac1eb-addc-42be-8381-27406e1c35e1.png?width=204&height=446)
Press Mobile network.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-8d2a0faa-8c38-4858-8495-d1626a101741.png?width=204&height=446)
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-fa93df1b-cb4e-4fd8-b93c-d59196d07363.png?width=204&height=446)
If you turn on the function, press OK.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-cbe55dc6-5ab4-4cfc-9cb6-78de69b859d1.png?width=204&height=446)
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-fa93df1b-cb4e-4fd8-b93c-d59196d07363.png?width=204&height=446)