Apple iPhone 12
Turn Wi-Fi Assist on or off
You can set your phone to use mobile data automatically when the connection to the Wi-Fi network is weak. To turn Wi-Fi Assist on or off, you need to turn on mobile data.
Press Settings.
Press Mobile Service.
Press the indicator next to "Wi-Fi Assist" to turn the function on or off.
Slide your finger upwards starting from the bottom of the screen to return to the home screen.
1. 1. Find "Mobile Service"
2. 2. Turn Wi-Fi Assist on or off
3. 3. Return to the home screen