Originally Posted by
SteinwayTransitCorp I hate to tell you the Passport does support HD. On T Mobile the little HD symbol pops up with certain calls. They do not want to support any phone not sold by them.
I do get the HD symbol on my Passport SE when I put in a TMO SIM but it relies on some 3G capabilities that won't exist when the 3G part is eventually shutdown. As has been explained when VoLTE first rolled out, the earlier VoLTE phones, not just BlackBerry, used a different protocol that isn't supported once 3G is shutdown.