1 Find "Wi-Fi Assistant"
Press Settings.
Press Wi-Fi.
Press Wi-Fi Assistant.
2 Turn automatic use of mobile data on or off
Press the indicator next to "Intelligently Select the Best Wi-Fi" to turn on the function.
Press the indicator next to "Switch to Mobile Automatically " to turn the function on or off.
3 Return to the home screen
Press the Home key to return to the home screen.