1. Find "Mobile Data"
Press Settings.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-0deb72e5-1a49-47c5-beaf-4bc15210fbcb.png?width=204&height=366)
Press Mobile Data.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-4394e2e9-df5c-4d7d-b2bd-0134c41a0f23.png?width=204&height=366)
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/7140723-f-be259a5a-0521-4c2a-8557-f26f98737a60.png?width=204&height=366)
3. Return to the home screen
Press the Home key to return to the home screen.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-be259a5a-0521-4c2a-8557-f26f98737a60.png?width=204&height=366)