1. Find "Mobile Data"
Press Settings.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-fa42d916-705a-41f6-b80e-dd5e80c2db77.png?width=206&height=448)
Press Mobile Data.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-dfd457d0-8fbc-4f68-8936-2aab24848fb2.png?width=206&height=448)
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-7013e237-9eeb-49ba-8f40-477acfade558.png?width=206&height=448)
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-7013e237-9eeb-49ba-8f40-477acfade558.png?width=206&height=448)