1 Find "Mobile network"
Slide your finger downwards starting from the top of the screen.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-5452e51d-155b-45b5-8bdd-32ec709ec475.png?width=220&height=390)
Press the settings icon.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-cd1cc86c-dd29-49c0-8f43-94788483bb1b.png?width=220&height=390)
Press Network & Internet.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-2e8ed46a-c46c-4305-bc08-7386cdb1f271.png?width=220&height=390)
Press Mobile network.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-719dc2b5-28cc-412e-ada8-ec6558562b99.png?width=220&height=390)
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-b643ccdf-c13b-42db-b4bb-6f17412db01b.png?width=220&height=390)
If you turn on data roaming, press OK.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-86ef29b3-2666-427d-a04c-d7cd6b82b951.png?width=220&height=390)
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-917c5087-14c7-44d4-b8d8-9bb14050d301.png?width=220&height=390)