JIO Volte not working after One Ui 4.0 update

[Abbyk]

Model : SM-G998U (S21 Ultra unlocked)

Volte not wifi calling not working for Jio SIM. I'am not sure if all S21 ultra unlocked owners are facing similar issues, if yes have any one filed a bug regarding the this issue?

[Rocking77]

Dual whatsapp media problem still not resolved. What about you ?

[PMKR]

Mine is S21 ultra. Volte is working for both jio and airtel. But wifi calling working only for airtel. Anybody facing the same problem. Recently updated to one ui 4. I have complained to Samsung many times. They are least bothered to solve the problem.

[PMKR]

I reset the network settings. It solved the problem of wifi calling not working for jio.