1. Find "Mobile Data"
Press Settings.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-fdcbcb55-c18a-47dc-84b0-ee06bdf3a8dd.png?width=212&height=458)
Press Mobile Data.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-260d296f-bc7c-4da0-bf80-87b1de1db45b.png?width=212&height=458)
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-4d3231dd-e0d0-4018-b396-f0cbc08a381f.png?width=212&height=458)
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-12b41693-94e4-4077-8b00-61db38f8575f.png?width=212&height=458)