1 Find "Mobile Data"
Press Settings.
![](http://wmstatic.global.ssl.fastly.net/ml/7100822-f-60c3d597-f1f2-444a-91e0-7b7b06421319.png?width=192&height=340)
Press Mobile Data.
![](http://wmstatic.global.ssl.fastly.net/ml/7100822-f-16f93e15-d3a7-4f6e-9f9a-312a88a3b57d.png?width=192&height=340)
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-17373c3d-dc16-457e-a4b8-b75297f0142a.png?width=192&height=340)
3 Return to the home screen
Press the Home key to return to the home screen.
![](http://wmstatic.global.ssl.fastly.net/ml/7100822-f-17373c3d-dc16-457e-a4b8-b75297f0142a.png?width=192&height=340)