Etisalat has VoLTE now? I'm seeing these settings on my phone for the first time. Got both Du and Etisalat Sims (Etisalat is sim 2) (also got the VoLTE status bar icon) :
Etisalat Internet Settings for Mobiles - YouTube
Manual Internet Profile Settings(APN setting)For Phones & Router
Etisalat APN Settings | Samsung Galaxy | Internet Settings | 2G 3G H+ | Hi speed Data | India - YouTube
How to Setup Etisalat Broadband WiFi Modem and Activate the Internet By Self