FYI, these connection strings that get displayed are mapped in the registry:
HKLM\Software\Microsoft\Shell\OEM\DataConnectionStrings
So for example if the radio is connected to UMTS_HSDPA it is set to display 4G (which is incorrect it should be 3.5G)
In fact all of the WCDMA frequencies are set to display 4G, which is really false marketing since WCDMA is 3G. And U.S. LTE is really just 4G, but marketed as 4G LTE. It's entirely messed up, but the mapping should be based upon the SIM you are using. I have a Cricket SIM so it uses the false marketing descriptions AT&T has.
Anyways, if you don't like what it is displaying you can changing the mapping to what you like

, post 4 on this link
List Your InterOp Tool Registry Edits Here - Windows Central Forums