Instead of being connected to a wall-fixed internet, the router has a SIM card in it. That way you can bring your private internet connection wherever you are. In addition, many mobile routers can distribute the Internet to multiple devices at once

Once you plug in a micro SIM card with a data plan, the router can communicate with the carrier's surrounding cell towers to access the internet and generate a reliable WiFi signal. You can easily share this internet access with family and friends