A mobile hotspot is a portable device that provides internet connectivity to other devices by creating a localized wireless network. It allows smartphones, tablets, or laptops to connect to the internet using cellular data, making it a convenient solution for on-the-go connectivity. Mobile hotspots are compact and often battery-powered, enabling users to access the internet in areas without traditional Wi-Fi infrastructure. They serve as a bridge between cellular networks and Wi-Fi-enabled devices, facilitating internet access in various locations and situations.