There are some cases where this is still a problem. voLTE is left up to the carrier on how they'll implement it. There are cases of phones with proper band supp

There are some cases where this is still a problem. voLTE is left up to the carrier on how they'll implement it. There are cases of phones with proper band support not working on Verizon due to lack of carrier provisioning. The fallback for calls is cdma if the phone isn't whitelisted or lacks a proper carrier file. To this day there are still people calling into verizon to get certain import models whitelisted. A thread for better context: https://www.reddit.com/r/verizon/comments/5uvrko/how_to_use_volte_on_a_noncertified_device/ https://www.reddit.com/r/verizon/comments/5uvrko/how_to_use_...