The technology that underpins 5G mobile networks is primarily based on millimeter wave (mmWave) technology, enhanced small cell architecture, and advanced MIMO (Multiple Input Multiple Output) techniques. 5G improves on 4G with faster data transmission, reduced latency, and increased connection capacity for numerous devices. This technology enables high-speed internet for various applications, including autonomous vehicles, smart cities, and augmented reality. 5G's infrastructure requires deploying more base stations and utilizing a broader spectrum of frequencies to achieve its impressive performance improvements.