AffableLEOGaming hey, yes i had sent the sms, but i was not getting volte in 4g area while travelling.
Till yesterday , my home area was only 3g and 2g bsnl, but from today, its 4g and volte is working without any issue. Bsnl upgraded my area to 4g today.
Tested and I am getting 22 mbps down and 3 mbps up. In 3g it was only 3 down and 0.5 to 1 mbps up.
Issue is resolved, volte is working.