Some AT&T customers may start seeing a "5G E" label appearing on their Android smartphones soon. It might initially seem to some that the telecommunications company is already offering 5G network connection to its subscribers, but the truth is the label stands for "5G Evolution", which is still classed as 4G technology.
https://www.notebookcheck.net/AT-T-offers-not-quite-5G-with-5G-E.385971.0.html