1. Find "Mobile Data"
Press Settings.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-6941ab6a-5ce1-4bc2-85e1-c9bab3ea7590.png?width=200&height=354)
Press Mobile Data.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-15cb4068-b707-4793-8097-3b02adf2221d.png?width=200&height=354)
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-bb7dd62c-cafe-41d6-88ca-9e8457d4bdf2.png?width=200&height=354)
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-bb7dd62c-cafe-41d6-88ca-9e8457d4bdf2.png?width=200&height=354)