The physical technology that 5G relies on to provide faster mobile internet includes millimeter wave frequencies, which allow for higher data transmission speeds and lower latency. Unlike its predecessors, 5G employs a larger range of frequencies, enabling increased capacity and connectivity for more devices. Additionally, 5G utilizes advanced technologies like MIMO (multiple input, multiple output) antennas to improve signal strength and quality. This leap in technology paves the way for innovations such as smart cities and autonomous vehicles, transforming communication and connectivity.