VoLTE is great -- I use it on Verizon. But at least with Verizon it is turned off by default and most people don't seem to turn it on. It is turned off by def

VoLTE is great -- I use it on Verizon. But at least with Verizon it is turned off by default and most people don't seem to turn it on. It is turned off by default because LTE coverage is not as complete as the legacy 3G coverage (yet). Facebook audio as others have pointed out is great.