1. Find "Mobile Data"
Press Settings.
![](http://wmstatic.global.ssl.fastly.net/ml/7030125-f-0e53714c-6a30-4de4-9cce-e13d0f701572.png?width=284&height=378)
Press Mobile Data.
![](http://wmstatic.global.ssl.fastly.net/ml/7030125-f-4200601f-38d7-4501-bc1d-e77ee1bd1717.png?width=284&height=378)
2. Turn automatic use of mobile data on or off
Press the indicator next to "Wi-Fi Assist" to turn the function on or off.
![](http://wmstatic.global.ssl.fastly.net/ml/7030125-f-8dd0d6da-ed8d-468f-9b80-cb78cfc77803.png?width=284&height=378)
3. Return to the home screen
Press the Home key to return to the home screen.
![](http://wmstatic.global.ssl.fastly.net/ml/7030125-f-8dd0d6da-ed8d-468f-9b80-cb78cfc77803.png?width=284&height=378)