1. Find "Wi-Fi"
Slide your finger downwards starting from the top of the screen.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-90800315-078b-4e39-9d48-c52467d6d778.png?width=210&height=350)
Press the settings icon.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-cc2e927c-f643-4f32-82fd-86a5ffcde815.png?width=210&height=350)
Press Wi-Fi.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-0b071ff3-6273-4c86-87dc-56c806a76704.png?width=210&height=350)
2. Turn automatic use of mobile data on or off
Press MORE.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-69291fab-46dc-4341-ad97-4dedbed40a10.png?width=210&height=350)
Press Smart network switch.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-63afc9f4-6aec-48dd-bc48-4e756105a70b.png?width=210&height=350)
If you want to turn on the function, press On.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-c43ef6d4-d607-4d70-b0ba-d34f4c2eeede.png?width=210&height=350)
If you want to turn off the function, press Off.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-c43ef6d4-d607-4d70-b0ba-d34f4c2eeede.png?width=210&height=350)
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-69291fab-46dc-4341-ad97-4dedbed40a10.png?width=210&height=350)