1. Find "Mobile Data"
Press Settings.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-eaa8e3e9-0634-4f90-9c21-ba52cc574989.png?width=210&height=456)
Press Mobile Data.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-1cfa7b8d-f844-49f6-abf7-42fc55bc6ebb.png?width=210&height=456)
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-393a418e-45a4-47df-b5e1-87ede5e3e31c.png?width=210&height=456)
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-393a418e-45a4-47df-b5e1-87ede5e3e31c.png?width=210&height=456)