4G, or fourth generation, is a type of mobile network technology that offers faster internet speeds and improved connectivity compared to its predecessor, 3G. It allows users to stream videos, download files, and browse the web more quickly and smoothly on their devices, such as smartphones and tablets. This technology uses advanced techniques like LTE (Long Term Evolution) to provide a better experience for users. With 4G, people can enjoy high-definition video calls and online gaming without interruptions. Overall, 4G has transformed how we communicate and access information on the go.