In this article, it gives a description of the 4G network, its architecture and discusses the functions of each layer. It is evident that 4G technologies will expand into web-based communications worldwide. 4G technology will enable improved applications such as telemedicine, which could save lives. This is a completely imp-based network and will significantly improve data transfer. Signal disruptions will be minimal and downloads will be completed in seconds, faster than ever. Within a few days, the 4G network could replace all existing 2G, 2.5G and 3G networks and would offer attractive features such as very high data speed, global roaming, good quality of service, greater security, etc. 4G supports all IP networks. 4G can be best described in one word “MAGIC” which means: Mobile multimedia; Anytime Anywhere Global mobility support; Integrated and Personalized Wireless Services Although 4G faces challenges and problems, we believe that future research will overcome these challenges and integrate the newly developed services, 4G networks, making them accessible to everyone, anytime and anywhere. everywhere.1 IntroductionLooking at the recent years, we will easily identify how the need for wireless technology is observed? And how do they find their place in the market? Because everyone demands high-speed wireless technology as well as easy access to the Internet through mobile phones. To solve this problem, a wireless technology was introduced called Wireless Local Area Network (WLAN), but there are some problems, one of the main ones being speed and bandwidth. Not long ago, a new submerged technology was introduced called third generation (3G). Although this technology is not even used worldwide...... middle of paper ...... was the first to use commercial 4G based on LTE to provide mobile broadband service . (Puish Gupta)12 ConclusionLTE-advanced, LTE version 8 backward compatibility is fully specified in 3 published GPPs 10. We have described its main technologies: orthogonal frequency division multiplexing, multiple input-multiple output, modulation and coding adaptive; and an open broadband wireless core. For each one we discussed what is it? What are the advantages and disadvantages of using this technology and how to solve these problems, but there are still some problems that can be solved by further research. In addition to the elements we have examined in this article, it is also expected that the use of cells, self-organizing networks, and power management systems will determine the evolution of current and future mobile wireless networks. (Ian F. Akydildiz, not mentioned)