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Calls on the Verizon network are about to sound clearer and work with video over the company’s LTE network. The carrier said on Tuesday that HD Voice and video calls on LTE will arrive in the “coming weeks.” Verizon has dubbed the new VoLTE services Advanced Calling 1.0.

To get the most benefit, customers on both sides of the voice or video conversation will need to be [company]Verizon[/company] subscribers, on the Verizon network and have phones capable of supporting VoLTE. Verizon hasn’t specified which phones will be the first to use Advanced Calling 1.0; I’d guess the list will be mainly comprised of higher-end, recent devices such as the Galaxy S5 and HTC One M8. It’s possible that the [company]Apple[/company] iPhone 6 will also work with VoLTE but it’s not likely when the device launches. Verizon can add Advanced Calling 1.0 to a phone via software updates.

It sounds like Verizon will make it easy to see if your contacts can use Advanced Calling 1.0 features:

“Video Calling is simplified when using VoLTE technology. The contact list in the phone clearly shows, with a video camera icon next to the name, who can receive a Video Call, and a tap or two on the phone starts the call so you can speak to friends and family face-to-face. Customers control Video Calls, easily switching to a voice-only call from a Video Call and back with a tap on the phone. The audio portion of a Video Call is delivered in HD Voice.”

HD Voice uses advanced audio codecs with wide-band audio and typically sounds much richer and clearer than traditional cellular voice calls. [company]T-Mobile[/company] has already rolled out VoLTE with HD Voice nationwide — only on a few handsets, however — and [company]Sprint[/company] also offers HD Voice service. [company]AT&T[/company] started its VoLTE service rollout in May on a single handset in just a few markets.