As prices come down, I predict 5G is going to explode. ZTE has just brought a quality 5G phone down to US$700. The ZTE Axon 10 Pro 5G uses Qualcomm's Snapdragon 855 top of the line chip. It has a 6.47-inch AMOLED display and a 4000mAh battery. The main camera is 48-megapixels, supported by an ultra-wide 20-megapixel lens and an 8-megapixel telephoto. 

One reason Korea has 1.5 million 5G users is that competing carriers offering rebates have brought effective prices down to US$600-700. Next year, China Mobile expects prices to fall to $300 and I expect demand to accelerate. (I'm watching for parts shortages but so none have appeared.)

Meanwhile, Americans and Koreans are buying 5G phones even where there is no 5G. Who wants a 4G phone likely to be obsolete in a year or two?