LTE is materially different from 3G, because the protocols are different AND the radios are different. For example, you can make an all-IP network with LTE. You

LTE is materially different from 3G, because the protocols are different AND the radios are different. For example, you can make an all-IP network with LTE. You can't do that with 3G. Ironically, though, most phone calls, even on LTE networks, are still 3G circuit-switched phone calls. Also, this article is correct that there is no similar difference in "5G." There is really no such thing, outside of carrier marketing, as "5G." One could try retrofitting meaning to "5G," like "OK now we'll really do packet switched phone calls" or something like that. But almost all the technologies that come under the heading 5G were foreseen and often standardized when LTE standards were first written. LTE stands for Long Term Evolution. It's meant to be a durable, evolving set of standards for wireless communication.