1. Find "Mobile Data"
Press Settings.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-7c11368f-a685-492b-a25d-b1b591ac0b94.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-c84ddf8c-9e98-423b-8ebf-6e177e2c1641.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-c84ddf8c-9e98-423b-8ebf-6e177e2c1641.png?width=210&height=454)