I never had WiFi calling issues at all! Always had and have in this RC release. You might need to go phone reset or you might need to call your carrier and have them update your PRL settings.Is the lack of Wi-fi calling issue common on beta 3? Are there many folk with no issue of this. May skip this RC as it’s my main device and Wi-fi calling is essential to me. Installing RC for iPad now.
wifi issues always works and was never broken, it’s your phone issues not iOS issues or some carrier BS.
I install beta on everything from T-Mobile to Verizon and art network for testing in USA and never had WiFi issues