The Iridium Go! uses the same technology as the classic action movie satphone, since Iridium Communications and its 66 satellite constellations are the gold standard in very remote telecommunications. As far as bandwidth goes, it's pretty impressive, able to supply enough voice and data for five smartphones or laptops so you can broadcast your help message in crisp 1080p.
Ethan Wolff-Mann is the Gear editor for Supercompressor. A Vermont native, he loves biking, running, rock and roll, and words. When he's off the grid, he's OFF THE GRID. Hear him testify on Twitter @ewolffmann.