Wi-Fi calling not working on Galaxy S10+

[WhosePhoneIsItAnyway]

Wondering if anyone has yet figured out how to make a Wi-Fi call with Airplane mode and Wi-Fi turned on.  Has anyone been able to make a Wi-Fi call at all?  It used to be a non-issue, but nowadays, it seems impossible.

OneUI 3.1, Android 11

[WhosePhoneIsItAnyway]

Additional:

I have had to resort to using ZoiPer and a VoIP account in order to make and take calls in a Wi-Fi-only area.  Not terribly practical, but this is what I've been forced to do. 

[vzw_customer_support]

Hi WhosePhoneIsItAnyway, 

We know that having access to features that you need most is important. We can help here. Does the issue happen with every Wi-Fi connection or just one particular Wi-Fi connection? What happens if you place a Wi-Fi call while you are not in airplane mode, then immediately attempt to place a Wi-Fi call when in Airplane mode? Do you confirm that you have a working data connection using the browser while in Airplane mode before placing the Wi-Fi call?

Thanks,

PamelaF_VZW