Almost all of 5G that has actually been deployed comes under the header of an evolution, over the long term, of what was called "Long Term Evolution" (LTE), bef

Almost all of 5G that has actually been deployed comes under the header of an evolution, over the long term, of what was called "Long Term Evolution" (LTE), before it was rebranded "4G" to make 5G look like a fundamentally new product. That includes an all-IP core network, full-duplex radios, IP voice, etc. All of that was in the LTE specs. What's really different in 5G was, predictably, difficult and expensive to deploy, and it remains very challenging. On top of that, it is much more complex to operate in a way that extracts the most advantage from things like beam steering, while avoiding pitfalls like poor penetration of mmwave bands into buildings, or even cars. Until what's called 5G Stand Alone (SA) is mastered and widely built-out, it is difficult to say what is buildable in 6G and what is a lab demo. On top of that, it is difficult to find real world use cases that are uniquely enabled by even the most complete deployment of everything 5G claims to be able to do. If you have a 5G phone, what have you been able to do you can't do on a wifi network? It's just more bits. Which is nice. As an evolution of the network.