1 Find "Mobile Data"
Press Settings.
![](http://wmstatic.global.ssl.fastly.net/ml/7100822-f-c96e5668-6276-4dce-bb7a-11ad46e473fc.png?width=210&height=454)
Press Mobile Data.
![](http://wmstatic.global.ssl.fastly.net/ml/7100822-f-7e826ad4-4b1f-4c37-b4e0-9c2713402654.png?width=210&height=454)
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/7100822-f-fcb44c2d-0d75-4d9d-9a12-049170df9617.png?width=210&height=454)
3 Return to the home screen
Slide your finger upwards starting from the bottom of the screen to return to the home screen.
![](http://wmstatic.global.ssl.fastly.net/ml/7100822-f-fcb44c2d-0d75-4d9d-9a12-049170df9617.png?width=210&height=454)