What is VoLTE, How it will impact and affect the future of transmitting voice services?

Voice over LTE is what happens when your carriers allows you to place a phone call over your LTE connection instead of the more common voice networks. Verizon Wireless, for example, uses1XRTT for all of your voice calls and LTE for data. This used to be why Verizon phones couldn't simultaneously use voice and data. Verizon found a way around this with dual-radio deployments, but with VoLTE there'd be no need for that. GSM users on AT&T and T-Mobile haven't had this issue because their voice and data streams can be processed by the same radio.