Mobile networks are systems that allow people to connect to the internet and communicate using their smartphones, tablets, and other wireless devices. These networks use radio waves to transmit data over distances, enabling users to make calls, send messages, and browse the web without needing a physical connection. There are different types of mobile networks, such as 3G, 4G, and the latest 5G, each offering faster speeds and better connectivity. Mobile network providers, like Verizon and AT&T, build and maintain the infrastructure, including cell towers, to ensure that users can stay connected wherever they go.