A mobile network is a communication system that allows mobile devices, like smartphones and tablets, to connect to the internet and make calls. It uses a series of cell towers to transmit signals over radio waves, enabling users to access services while on the move. These networks are typically divided into different generations, such as 3G, 4G, and 5G, each offering improved speed and connectivity. Mobile networks rely on various technologies and protocols to ensure reliable communication, making it possible for people to stay connected anytime and anywhere.