1. Find "Mobile Data"
Press Settings.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-77386f20-4611-473e-a41a-f1e43616d220.png?width=208&height=368)
Press Mobile Data.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-8c77bdf9-7e5e-4e2d-a079-f91288b134f0.png?width=208&height=368)
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-3a6397ad-fff0-41ad-a11e-a9c7a4072587.png?width=208&height=368)
3. Return to the home screen
Press the Home key to return to the home screen.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-3a6397ad-fff0-41ad-a11e-a9c7a4072587.png?width=208&height=368)