This document discusses the evolution of wireless technologies from 1G to 5G. It provides an overview of the key concepts, architecture, hardware, software and features of 5G. 5G is expected to offer speeds up to 1 Gbps, lower latency, and better reliability than previous generations. It will allow for applications like wearable devices, media independent handover, and pervasive networks. 5G aims to provide a unified global standard for wireless connectivity with high quality of service.