1. Find "Mobile network"
Press Settings.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-ea1cc251-e06b-4366-b9c9-1dd43faee77b.png?width=218&height=452)
Press Wireless & networks.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-99c217e2-e992-4d2a-bfbc-d12f4429e87a.png?width=218&height=452)
Press Mobile network.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-ed8f1282-9769-4be5-902a-9653cde544c9.png?width=218&height=452)
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-7d7aa110-e396-4802-ae6c-0c382a0717cb.png?width=218&height=452)
If you turn on the function, press OK.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-b165162c-266a-4012-9d53-05ec392d9312.png?width=218&height=452)
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-7d7aa110-e396-4802-ae6c-0c382a0717cb.png?width=218&height=452)