I just tried the first mainstream 5G phone, and so far 5G isn’t all it’s cracked up to be

I just published CNBC’s review of the Galaxy S20 Ultra , one of the first mainstream 5G devices that launches on Friday. Unlike earlier devices in the U.S., Samsung’s new Galaxy S20+ and Galaxy S20 Ultra support the variety of 5G flavors rolling out in the U.S., including widespread low-band and much faster, but limited, mmWave 5G networks.