It is just 4g LTE. you won’t get the satisfaction you want from 5G since it is just LTE ready at the very least. Even if you go and buy sim cards that can run 5g would still not work since that there are so many other phones out there that could not even be working with the same sim that you use before as well. it is going to be hard to come up with a phone that is working well with 5g unless you buy the latest ones. If you have wifi, there is no need for it.