The US wireless market is moving very quickly to disallowing devices that ARE NOT VOLTE compatible. I post this as a public service announcement (PSA).
Read this as T-Mobile has announced that 2G and 3G devices will not be allowed on their US network. I am not sure of AT&T’s timeline but, it can’t be far behind.
Are our watches using the MTK6739 compatible with VOLTE?
UPDATE: Upon search on the Kospet site, I see they specifically address the the Prime is VOLTE compatible.