1. Find "Mobile Data"
Press Settings.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-eb65d787-390f-4b05-ac2f-cf0f516ac3cd.png?width=208&height=454)
Press Mobile Data.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-1c15d5d4-35e0-4480-bc44-18db75a0c933.png?width=208&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-e335350e-af66-4ed1-8c77-558e07e4551f.png?width=208&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-e335350e-af66-4ed1-8c77-558e07e4551f.png?width=208&height=454)