1. Find "Wi-Fi"
Slide two fingers downwards starting from the top of the screen.
Press the settings icon.
Press Network and Internet.
Press Wi-Fi.
2. Turn on Wi-Fi
Press the indicator next to "Use Wi-Fi" to turn on the function.
3. Turn automatic use of mobile data on or off
Press Wi-Fi preferences.
Press Advanced.
Press the indicator next to "Switch to mobile data automatically" to turn the function on or off.
4. Return to the home screen
Slide your finger upwards starting from the bottom of the screen to return to the home screen.