IQOO Z6 PRO, Airtel Postpaid Sim. I don't see the VoWIFI symbol nor calls work but SMS works. Weird tbh.
I get Zero signal at my office space but since thankfully I receive SMS at least my MFA situation is not a bother.
In moving trains, many times airtel internet does not work at all but Airplane mode switch cycle helps.
I'm changing my sim next month. They overcharge for international calls and I'm honestly tired of their subpar services.