By launching of Samsung Galaxy S20 along with 5G on every device , the situation becomes confusing. Even the Galaxy S20 Plus & S20 Ultra can work for every type of 5G available network.
There is no problem if you subscribe T-Mobile because the magenta carrier uses the same version of 5G. It might be slower but has a solid range & reliability.
Verizon uses only mmWave technology for 5G were skipped the smallest Galaxy S20 entirely as it will not work with Verizon 5G network. Few weeks ago, Samsung announced a special version would arrive i.e., Galaxy S20 5G UW "in short Ultra Wideband". This new version will support Verizon's high frequency network.
This device went on sale thus week but it came with some couple of unwelcome surprises. Though the new Verizon Galaxy S20 UW has less RAM than other S20 Galaxy. Even it also lacks expandable memory microSD which become very curious omissions.