I got my hands on Motorola z3 + moto 5G module with above unlimited plan.
I plan to use USB tethering with my windows notebook in 5G service area.
I am not in 5G service area now, but when I try to setup USB tethering in the
z3 settings menu, I cannot select USB tethering when I have the 5G module attached.
When I remove the 5G module then USB tethering selection is enabled.
This tells me 5G speed USB tethering is not available. Need this feature enabled !
My z3 shows device is up-to-date with PDXS29.84-30-3 (as of 6/5/19)
Any information is appreciated !
Figured out myself.
I used the z3 USB C connector to connect to my PC. This was the problem.
When I use the 5G Moto mod USB C connector to connect to my PC. USB tethering can be enabled.