Not sure such a thing exists but here is what I'm looking for: An always on (connected to a UPS in the event of a power outage) cellular router or hotspot for my smart devices. The idea being if my house loses all wired connections coming in, I'd have a backup internet connection to still for emergencies should I be away. Remaining devices would also be on a battery backup too. Some devices would always be connected to this network. I expect data usage to be low, so a pay as you go plan would be ideal. Hotspots seem to be more light usage rather than 24/7. Routers I've found tend to be more commercial grade. Is there anything like I'm looking for in the consumer space?