Verizon 5G Nationwide Vs Ultra Wideband. Verizon 5g ultra wideband vs 5g nationwide mehhere is the problem with 5g mmwave: But just how does it differ from 4g? If your phone doesn't show the . What's the difference between the 5g nationwide network and 5g ultra wideband network? Recently, 5g has started taking the world by storm. 5g nationwide has fast, reliable speeds . It's widely available and covers over 200 million .