Wrote the previous message then proceeded to drive to the office. Sitting at the light at Catalina/Talbot, using "phone 1" (weaker of the two), I toggled airplane mode on then off... There it was: 4G! Had to rub the sleep out of my eyes to make sure I wasn't seeing things. As this was the first time I experienced Sprint LTE, I had to pull over and play with it. It was glorious. But to put it into numbers, ran a speedtest. 18.67MB down, 7.63MB up, 50ms ping. Drove two blocks north and it was gone.
Now, on to trying to make sure I have the best settings/software for optimal connectivity.