VoLTE (voice over LTE) is higher quality, and has greater capacity than the old GSM and UTMS which means more people can use the spectrum. VoWiFi (voice over W

VoLTE (voice over LTE) is higher quality, and has greater capacity than the old GSM and UTMS which means more people can use the spectrum. VoWiFi (voice over WiFi) allows customer on-premises devices to extend the network, allowing businesses and home users some control over where people want to be reachable.