Activation requires a valid US address for E911 functionality and a data connection to the Verizon network or a roaming cellular network.
If activation fails and you receive a message to contact Verizon, relocate to an area where you have better signal reception (e.g., if indoors, step outside) and try again.
You can make and receive calls over Wi-Fi even if you're outside the Verizon network coverage area.
Wi-Fi calls always originate in the US, even when you're outside of the US.
Calls to US numbers are not billed (except for 411 or other premium calls).
Calls to international numbers are billed according to your international long distance plan.
From the Home screen, navigate: Settings > Phone.
If using an eSIM with a second line, select a line (e.g., Primary, Secondary, 888-888-8888, etc.) then proceed to step 2.
Tap Wi-Fi Calling.
Tap the Wi-Fi calling on this iPhone switch to turn on .
If you would like for your iPhone to default to calling over Wi-Fi while roaming internationally, tap the Prefer Wi-Fi While Roaming switch to turn on.
From the Enable Wi-Fi calling pop-up, tap Enable.
From the 'Important - Emergency 911 address...' screen, enter the following:
If you have previous entered your address, you won't be prompted to do again. View these instructions for changing your address.
Address Line 1
Address Line 2 (APT, Suite, etc.)
From the Terms and Conditions screen, tap the Radio button then tap Continue.
Accepted when a check mark is present.
If prompted with the 'Edit Emergency Address' pop-up, choose the preferred address then tap Save Changes.
Ensure the 'Wi-Fi calling on this iPhone' switch is set to on.
To determine if a call is being placed over Wi-Fi, view Determine Wi-Fi Call - iOS.