4G and 5G are generations of mobile network technology that provide wireless communication for devices like smartphones and tablets. 4G offers faster internet speeds and improved connectivity compared to its predecessor, 3G, enabling activities like streaming videos and online gaming with minimal lag. 5G is the latest advancement, delivering even higher speeds, lower latency, and the ability to connect more devices simultaneously. This technology supports innovations such as smart cities, autonomous vehicles, and the Internet of Things (IoT), enhancing everyday life and driving economic growth through improved communication and data transfer capabilities.