WI-Fi Calling, Android 12 and a Sony Xperia 1 ii

[Creamer]

I see there are a few calls about WI-FI calling not working on a couple of devices.
I have a Sony Xperia 1 ii, and ever since it updated to Android 12 the WI-FI calling has disappeared.
I have been through various chats with different Vodafone teams and despite sending out the WI-FI config, and resetting my line, and a multitude of other things nothing seems to have fixed it.

I stick an EE sim into it, and the option is there straight away, I stick my Vodafone Sim in another device and again the option appears straight away. I really don't know where to go next as the Vodafone Tech has asked me to contact Sony as they basically don't know how to fix it.
I'm just wondering if anyone else has the same model of phone and OS and if it works ok, because I don't fancy a Factory reset on my phone just in-case.

[abuusayd]

Glad we finally have reception. I noticed that with ee, it doesn't show the WiFi calling symbol next to the WiFi and mobile network signal. I also do like the quick setting WiFi calling button when you slide the screen down. So it seems EE is doing a better job with WiFi calling. On a slightly different note, with EE, I didn't actually need WiFi calling because the reception was better in my house.

[abuusayd]

Just got an update today and WiFi calling gone again. Don't update your phone if you want WiFi calling. What a joke

[Creamer]

I had an update as well today, and it was missing afterwards.

However I had an OMA update waiting so I allowed that and it appeared again. 

[abuusayd]

I also got the OMA straight away. Not sure why mine didn't work then

[abuusayd]

Called Vodafone. They disabled and re enabled WiFi calling and it's working again.