1. Find "Mobile networks"
Slide your finger downwards starting from the top of the screen.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-82001f12-5ac0-4ab7-b54e-34f497279b52.png?width=214&height=454)
Press the settings icon.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-9f25ab5d-c924-433b-8496-01a61ec3eede.png?width=214&height=454)
Press Connections.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-0b7401f8-9273-4d35-a302-d5bb51a43fca.png?width=214&height=454)
Press Mobile networks.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-0ae49a1d-83fc-4b7f-8872-72e3c678fb45.png?width=214&height=454)
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-e7994d65-e63c-4687-95c4-25d00bacdf5f.png?width=214&height=454)
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-e7994d65-e63c-4687-95c4-25d00bacdf5f.png?width=214&height=454)