Galaxy S20 5G version 1 or 2 The Samsung Galaxy S20+ and S20 Ultra launched with 5G connectivity – the first devices in the USA with 5G connectivity for both sub-6 5G AND mmWave 5G. The Samsung Galaxy S20 (non-plus, non-Ultra) also launched with 5G, but only worked with sub-6 5G. In Q2 of 2020, another version of the Galaxy S20 will appear with the ability to connect to both sub-6 5G AND mmWave 5G.
If you buy a Samsung Galaxy S20 unlocked from Samsung, you’ll get a device with sub-6 5G connectivity and NO connectivity with mmWave 5G. The difference between this first S20 and the Q2 S20 for Verizon is hardware. Hardware modifications to this new version of the S20 (with Verizon) allow it to connect to both sub-6 and mmWave versions of 5G.
The same is true of the Galaxy S20 sold in Q1 by any other brand – until that second version of the Galaxy S20 is released, there is no Galaxy S20 (non-plus, non-Ultra) with the ability to connect to mmWave 5G. This first Galaxy S20 can only connect with sub-6 5G.
"Because mmWave 5G requires two discrete antenna modules around the frame of the device, it consumes a small but significant amount of space that must be designed into the phone from the get go in order to be accommodated. Samsung decided that the smaller S20 simply wasn't a good candidate to undertake this engineering challenge, and left it with support for sub-6GHz 5G networks only (which is what the vast, vast majority of the world is solely using anyway)."