1. Find "Mobile networks"
Slide your finger downwards starting from the top of the screen.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-aa49f7aa-0eed-44e8-ac4b-8e400a9b21e8.png?width=206&height=368)
Press the settings icon.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-93050226-ea5c-4aa1-bbd5-9cb190344575.png?width=206&height=368)
Press Network & Internet.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-14ccf874-8f33-4fb6-bfd0-e7d0a2eff148.png?width=206&height=368)
Press Mobile networks.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-300f6531-3b17-44f7-9fe9-394b0d8ffce3.png?width=206&height=368)
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-541bef74-4f8e-42c6-96a5-64c7b38fa559.png?width=206&height=368)
If you turn on data roaming, press OK.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-524d276d-672a-4c3f-bc01-d63ac0a3e8c7.png?width=206&height=368)
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-f72eac29-25c3-47d8-927e-ff0cf01cc891.png?width=206&height=368)