where is wifi calling and native jio calling on asus zenfone 5z

[ZT-d9a9180f]

asus u r good at quality but as flagship device u should watch over basic necessities of user like wifi calling and jio native video call options
this option is present in budget phones but not on 5z
keep in mind
kindly provide asus on 5z thanks
reply positive hopefully

[gkumar_india18]

No one will answer this question here, neither Asus technical nor moderator.
They are sinner to their customers.
Never purchase Asus device again.