This document discusses the evolution of wireless communication systems from 3G to 5G. 3G services include global roaming, improved voice and video calling, email, web browsing, and online shopping/banking. 4G is a conceptual framework for a high-speed wireless network that was expected to emerge around 2010-2015, bringing near-perfect wireless internet access worldwide. 5G is a theoretical future wireless system that would have almost no limitations, allowing for a truly wireless world however it is not yet a real system. The document outlines increasing capabilities and needs for high quality, low cost, reliable, high-speed wireless services across various industries.