1 Find "Mobile Data"
Press Settings.
![](http://wmstatic.global.ssl.fastly.net/ml/7291123-f-d65223db-9d62-417c-909c-167d4b8c0d7e.png?width=304&height=436)
Press Mobile Data.
![](http://wmstatic.global.ssl.fastly.net/ml/7291123-f-bc30c09e-cb62-4d41-9050-76e5161d1ecf.png?width=304&height=436)
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/7291123-f-38b845f6-c20a-48e9-83ae-d050dfa3256b.png?width=304&height=436)
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/7291123-f-38b845f6-c20a-48e9-83ae-d050dfa3256b.png?width=304&height=436)