5G's very high bandwidth and other features help to solve the following issue: when you get a huge population close together all communicating, (as in stadiums, conventions or during emergencies in very dense population centers) the airwaves become too congested to get more than a few KB/s with older tech.
Or even just in dense cities. I see 4G speeds as high as 90 Mbps at (eg) 6AM, but at 9PM on a weeknight it can slow to 2 Mbps or less due to congestion. Too slow to stream video with decent quality or to download anything, and it’s very frustrating!
