Make sure you are connected to Wi-Fi and then open the Settings app
In Settings, choose "Connections"
In Connections, toggle on "Wi-Fi Calling" if it is currently not toggled on
You may be asked to enter your Emergency Address, we recommend putting your dealership, this is the address that will be used should you call 911 while connected to Wi-Fi
Select Save, your calls will now go over Wi-Fi when connected, boosting your ability to make and receive calls in low cellular network signal areas.