The upgrade dates are according to this schedule......As M30s was
supposed to have the upgrade on April as well as of A70's...... So there
is a high possiblity that you gonna have the update within thus month or
at the first of the next month ..........
All these device should support wifi calling.... but prior to that you
need to know that this wifi calling feature us only available for Airtel
and jio sims only and some selected states in India..... so in order to
know the status of your area you s...