Jio wifi calling option dis appeared.

Experiencing the same, please let me know if you have found a solution..thank you..

I did this and it works flawlessly. Try to take out your sim and then insert it again. Wait for a couple of minutes and then you should be able to see the option there

I am also facing the same issue. Since I use eSIM, I cannot remove and re-enter the same. Is there any other option?

UPDATE: Found on other thread and its working for me now. Please go to Settings-> About. I was prompted that your provider has updated network setting. Apply updates? (something like this). I hit on update. After that Wifi-calling got enabled and working.