1 Find "Mobile Data"
Press Settings.
![](http://wmstatic.global.ssl.fastly.net/ml/7291123-f-e89da4e4-4bc9-41c0-a481-af0a5dd275f3.png?width=294&height=392)
Press Mobile Data.
![](http://wmstatic.global.ssl.fastly.net/ml/7291123-f-9d25714c-f810-4219-96a0-c677bb4ab849.png?width=294&height=392)
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/7291123-f-59a82c12-2715-47b5-9cf8-3d17cc1cf68d.png?width=294&height=392)
3 Return to the home screen
Press the Home key to return to the home screen.
![](http://wmstatic.global.ssl.fastly.net/ml/7291123-f-59a82c12-2715-47b5-9cf8-3d17cc1cf68d.png?width=294&height=392)