Share your experience!
I had a US version and got VoLTE worked fine with verizon, but i travelled and noticed that its itt enabled and no option in the settings. Also i have contacted the carrier and they said it is enabled on your sim card. I saw some people in google tried to dial *#*#4636#*#* and i got grayed provisioned Volte and cannot enable it. Any one have an idea?
Your device is prepared for Volte, your provider probably isn't.
There are many posts on this forum explaining in detail.
Mine is provisioned and shows "switched on" but grayed out also. Video calling and Wifi calling are not enabled.