Verizon’s special HD Voice and Video calling only work when calling another enabled Verizon device, but so long as you are connected to LTE you can use VoLTE for simultaneous Voice & Data on the Verizon iPhone 6.
Here’s how you can turn on Verizon iPhone 6 voice and data so that you can use this new feature. You can only use this when you have a LTE signal, but the good news is Verizon offers widespread 4G LTE coverage.
The Verizon and Verizon iPhone 6 Plus finally support simultaneous voice and data, which is a fancy way of saying you can talk and use the Internet at the same time. The only catch is that you need to turn on voice and data on the Verizon iPhone 6 before you can use it.
Numerous iPhone 6 and 6 Plus users are reporting that the VoLTE service is , allowing Verizon iPhone 6 and 6 Plus users to use simultaneous voice and data capabilities for the first time when connected to a 4G LTE network. MacRumors has confirmed that VoLTE is indeed working, enabling users to browse the web or access apps while on a voice call.