Mobile networks refer to the infrastructure and systems that allow mobile communication devices, such as smartphones and tablets, to connect to the internet and other networks. This technology enables users to make calls, send messages, and access online services while on the go. Mobile networks use a combination of cellular towers, wireless signals, and other technologies to provide coverage and support for a wide range of mobile devices. The field of mobile networks includes research on improving network performance, security, and reliability, as well as developing new technologies for faster data speeds and more efficient communication.