1. Find "Wi-Fi preferences"
Slide two fingers downwards starting from the top of the screen.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-aa49f7aa-0eed-44e8-ac4b-8e400a9b21e8.png?width=206&height=368)
Press the settings icon.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-93050226-ea5c-4aa1-bbd5-9cb190344575.png?width=206&height=368)
Press Network & Internet.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-14ccf874-8f33-4fb6-bfd0-e7d0a2eff148.png?width=206&height=368)
Press Wi-Fi.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-300f6531-3b17-44f7-9fe9-394b0d8ffce3.png?width=206&height=368)
Press Wi-Fi preferences.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-4cabff3e-9e90-496d-92c0-636e2d1dca4a.png?width=206&height=368)
2. Turn automatic use of mobile data on or off
Press the indicator next to "Auto network switch" to turn the function on or off.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-e72756d2-e042-46a6-9860-eae7506a605f.png?width=206&height=368)
If you turn on the function, press ENABLE.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-36b11c95-eed3-4dbf-9345-1ea9350a66e0.png?width=206&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-e72756d2-e042-46a6-9860-eae7506a605f.png?width=206&height=368)