News about building 5G wireless broadband in the United States has been ramping up for months. Both AT&T and Verizon have promised to offer customers these ultra-fast networks within a few years, and now the Federal Communications Commission is setting the stage. It’s still unclear what 5G will really deliver at scale. Verizon’s early 5G testing is promising gigabit speeds, and CNET reporter Roger Cheng watched Verizon produce a 3.77 gigabits-per-second download in a demo. In general, the vague range people talk about is a 10 to 100 times speed improvement over 4G. Any improvement would be useful, but that order of magnitude makes all the difference.