1 Find "Mobile Data"
Press Settings.
![](http://wmstatic.global.ssl.fastly.net/ml/7030125-f-7d06dc2c-cc71-46ab-a61b-e91df7851a77.png?width=296&height=396)
Press Mobile Data.
![](http://wmstatic.global.ssl.fastly.net/ml/7030125-f-e22b50cd-854d-45d2-9a6e-3560a008ee23.png?width=296&height=396)
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-48d9ccd0-b6c0-49e0-b626-a025c7b9f886.png?width=296&height=396)
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-48d9ccd0-b6c0-49e0-b626-a025c7b9f886.png?width=296&height=396)