Typically, a phone that supports a specific technology in three different radio frequency bands. Nearly all modern phones support more than three bands, so this term has fallen out of use for cellular ...
The FCC’s auction, over the last five years, of L-band (1.4 to 1.8 GHz) and S-band (2.2 to 2.4 GHz) microwave frequencies to commercial broadband providers is driving a mandatory migration to the less ...