1. Find "Mobile Data"
Press Settings.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-55bb6010-7058-4330-9de4-587495b13bb1.png?width=210&height=454)
Press Mobile Data.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-303e19dd-64ec-41fc-9176-ee985aa98536.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/7140723-f-1f1afd77-0ef1-40e8-8c5e-c84b1da3deb3.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/7140723-f-1f1afd77-0ef1-40e8-8c5e-c84b1da3deb3.png?width=210&height=454)