1. Find "Mobile Data"
Press Settings.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-8cafd714-e23d-42c6-8561-8533d6273c39.png?width=200&height=354)
Press Mobile Data.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-f23522d9-2a96-479d-a80a-f78a3edb1821.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-cf1635af-15bb-4d20-8ce5-1e521ee4339f.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-cf1635af-15bb-4d20-8ce5-1e521ee4339f.png?width=200&height=354)