What is difference between FR1 and FR2 in 5G?

FR1 defines bands in the sub-6 GHz spectrum (although 7125 MHz is the maximum) and FR2 defines bands in the mmWave spectrum . Because of the higher carrier frequencies in FR2, it has a higher maximum bandwidth. Bandwidths include 5-100 MHz (FR1) and 50/100/200/400 MHz (FR2).

5G comes in three major bands which are Low-frequency bands, Medium range frequency bands and High range frequency bands and not all bands are equal. Low and Mid band frequencies come under the Sub-GHz umbrella which is similar to the 4G LTE network that comes in Sub 6 GHz umbrella as well.

The minimum is 20 MHz and the maximum is 50 MHz.