Mobile data hotspots aren't the world's most exciting products, though if you travel consistently, they can be an absolute lifesaver. But let's be brutally honest: the average mobile data consumer really doesn't care about the hotspot itself - as long as it works. They care about the network, and the monthly pricing. That's really it.
The hotspot is basically just a tiny little Wi-Fi router with a cellular modem and a lithium-ion battery inside.