I can easily tell the difference between 4g and 5g here in North Dallas...I am using an S22+ Ultra on Red Pocket (using T-Mobile towers)...
Yeah, I'm using S9 via Red Pocket on Verizon towers. 4G. I wonder if 5G would even work here. Major metro area (Berkeley, CA) but in my neighborhood Verizon, T-Mobile, doesn't matter, reception sucks (2-3 bars, if you're lucky).
Wasn't there a thing a year or two ago about 5G near airports blowing up air traffic control at major airports? Really scary stuff!