The three U.S. carriers use different names for the 5G services that utilize mmWave technology: AT&T’s mmWave 5G is named 5G Plus (5G+), Verizon launched 5G Ultra Wideband (5G UWB) using mmWave, while T-Mobile uses Ultra Capacity 5G as the name for the combined service using both its mid-band and mmWave networks, but …