Calling Over Wi-Fi would only kick in if no network signal is available at all so try toggling on Flight Mode please to see if it then works.
The phone is that new its still not on the list of eligible phone's @bigfoot651 which could be causing the issue.
Calling Over Wi-Fi.
Although that said we have cone across people who have phone's that still have worked even if it wasn't on the list or if the phone was not bought directly from Vodafone.
The help information I have on Calling Over Wi-Fi is …
Calling Over WiFi Set up. Ask the agent to force the phone via sending an OTA configuration update that should provision your phone for Calling Over WiFi.
"Register for Vodafone Wi-Fi Calling
Text the word CALLING to 97888
This is a free text which will add the service to your account
You should receive the following confirmation text:
Thanks. We’ll add Wi-Fi Calling to your account in the next 24 hours and will let you know when you’re all set up.
If you’d like to discuss this with us, or if you have any other issues, you can find more info here or contact us
Once you receive the confirmation text, switch on Wi-Fi Calling in your settings
Go to Settings, scroll down and choose the Application icon
Choose Phone and scroll down until you see Wi-Fi Calling – select the box beside this option
A pop-up will appear asking you to confirm if you want to enable Wi-Fi Calling – tap OK"
Current Phone >
Samsung Galaxy s²³ Ultra 512gb Phantom Black.
