1 Find "Mobile Data"
Press Settings.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-f07639b8-ad53-4816-be64-06f1f6ae41d1.png?width=210&height=454)
Press Mobile Data.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-8c0a5fbc-b314-4930-9292-89ee694a0e57.png?width=210&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-c1441e58-1cb5-448a-834e-af65634c985c.png?width=210&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-c1441e58-1cb5-448a-834e-af65634c985c.png?width=210&height=454)