Samsung Galaxy S8
Android 7.0
Select help topic
1. Find "Wi-Fi"
Slide your finger downwards starting from the top of the screen.
![](http://cdn.sp-selfservice.com/ml/7090822-f-c752ad55-c9d4-48f0-9468-b3a4adab67f3.png?width=208&height=426)
Press the settings icon.
![](http://cdn.sp-selfservice.com/ml/7090822-f-91f6e27f-19e2-4f0b-83f1-a1452941378e.png?width=208&height=426)
Press Connections.
![](http://cdn.sp-selfservice.com/ml/7090822-f-0606ba60-46c7-469e-9582-cfa55ef346cd.png?width=208&height=426)
Press Wi-Fi.
![](http://cdn.sp-selfservice.com/ml/7090822-f-4704c4c4-1d1e-4fef-b28c-34c47e7a7b1f.png?width=208&height=426)
2. Turn automatic use of mobile data on or off
Press ADVANCED.
![](http://cdn.sp-selfservice.com/ml/7090822-f-bb1d04d1-7bbb-43b0-8edf-6e4628af9c1f.png?width=208&height=426)
Press the indicator next to "Smart network switch" to turn the function on or off.
![](http://cdn.sp-selfservice.com/ml/7090822-f-bb648525-bbf2-4ea7-b401-3863f27fdf9b.png?width=208&height=426)
3. Return to the home screen
Press the Home key to return to the home screen.
![](http://cdn.sp-selfservice.com/ml/7090822-f-bb648525-bbf2-4ea7-b401-3863f27fdf9b.png?width=208&height=426)