Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. A successor of 3G and 2G generations of standards, 4G, short for “4th generation” is described as a faster wireless network, able to support download speeds of 100 megabits per second, largely used by today’s smartphones. Though, it is not yet fully implemented, 4G is tagged as the future of communication technologies, offering better and more secure services. Recently, some of US mobile-network operators announced the release of 4G LTE network, which is expected to improve communication between mobile devices and to increase the wireless network speed. To find out more about 4G, its evolution and technological impact – read this book.