Hi 

My Xperia 5 ii has just updated to Android 12 and I have lost WiFi calling.  Due to lack on network signal where I live I rely on WiFi calling. 

I have checked my network (Vodafone) and I still have WiFi calling enabled, but when I try to make a call it struggles with the network until it just cuts me off.

I have read all the guidance on how to set it up but they only cover up to Android 11. The WiFi calling options have "disappeared".

Any help would be appreciated.

Thanks