Intel Corp (INTC)

[jfine]

only works if you are in an LTE area and both phones are VoLTE enabled. My guess is VZ will continue to require CDMA capability in their handsets for the foreseeable future.

"HD Voice and Video Calling work only when both people are in the Verizon 4G LTE coverage area and are using VoLTE-enabled smartphones from Verizon. The calling experience customers know today remains the same if one Verizon customer uses a VoLTE-enabled phone and the other doesn’t, or if a customer with a Verizon smartphone calls a customer of another carrier or a landline phone

http://www.verizonwireless.com/news/article/2014/08/hd-voice-and-video-calling-coming-soon-to-verizon-wireless4g-lte-network.html