This document provides a description of the 4G network, architecture and discusses the functions of each layer. It is evident that 4G technologies will expand into web-based communication around the world. 4G technology will enable improved applications such as telemedicine that could save lives. It is a completely imp-based network and will greatly improve data transfer. Signal interruptions will be minimal and downloads will happen in seconds, faster than ever. Within a few days the 4G network could replace all existing 2G, 2.5G, 3G networks and offers interesting features such as very high data speed, global roaming, good quality of service, greater security, etc. 4G supports all IP-based networks. 4G can be best described in one word “MAGIC” which stands for: • Mobile multimedia • Anytime, anywhere • Supporting global mobility • Integrated and personalized wireless services Although 4G is facing challenges and problems, we believe that future research will overcome these challenges and will integrate the newly developed services of 4G networks making them available to everyone, anytime, anywhere.1 Introduction Looking back at the last few years we will easily identify how the need for wireless technology is observed? And how do they position themselves on the market? Because everyone requires high-speed wireless technology and also easy access to the Internet via mobile phones. To address this problem of people, a wireless technology, called wireless local area network (WLAN), was introduced, but there are some problems, one of the main ones is speed and bandwidth. Not long ago a new immersive technology called third generation (3G) was introduced. However, this technology is not even being used worldwide… halfway down the paper… the first commercial 4G based on LTE was used to provide mobile broadband service. (Puish Gupta)12 ConclusionLTE-advanced backward compatibility of LTE version 8 is fully specified in 3 GPP version 10. We have described its main technologies: orthogonal frequency division multiplexing, multiple inputs-multiple outputs, modulation and coding adaptive; and open broadband wireless core. For each one we discussed what it is? What are the advantages and disadvantages of using this technology and how to deal with these problems, but there are still some problems that can be solved through further research. In addition to the elements we have examined in this paper, the use of cells, self-organizing networks, and energy management systems are also expected to shape the evolution of current and future mobile wireless networks. (Ian F. Akydildiz, not mentioned)