4G networks are the fourth generation of mobile telecommunications technology, designed to provide faster data speeds and improved connectivity compared to previous generations like 3G. They enable users to stream videos, play online games, and browse the internet with minimal delays, enhancing the overall mobile experience. One of the key features of 4G networks is their use of LTE (Long Term Evolution) technology, which allows for higher bandwidth and more efficient data transmission. This means that users can enjoy smoother video calls and quicker downloads, making 4G a significant advancement in mobile communication.