** Our Cellular System modems have been certified for use on all major US networks during their development. The user is solely responsible for getting an appropriate cellular data plan for the intended device. Haven Technologies and related companies are not responsible for device use or configuration attempts with data plans not intended for these systems. Though alternative plan use may be possible, Haven Technologies and related companies will not accept returns due to customers not able to figure out how to make a non-hotspot data plan work in a hotspot type devices that are our wireless internet systems, modems, and routers.