What are the advantages of getting a mobile hotspot---such as the Verizon Jetpack 4G LTE Mobile Hotspot MiFi 4620L---over simply using the hotspot feature of a tablet (such as the Samsung Galaxy 7.7" or a Motorola Xyboard 8.2") or smartphone (such as the Samsung Stratosphere)?
More specifically, is the reception better? For example, in an area of marginal data signal strength, would the mobile hotspot be more likely (as a sort of specialized device) to get a usable signal than would a mobile-hotspot-enabled tablet or smartphone?