Mobile communication technology is evolving day by day and year after year. This paper discusses the requirements of future wireless communication and how the upcoming technologies help in achieving required communication to go beyond 5th generation (5G) and 6th generation (6G) technologies along with its roles in different types of applications. 6G has three main advancement features, namely, cell phone ultra-broadband, Internet of Things (IOT), and Artificial Intelligence (AI). Basically, Tera hertz (THz) communication can be used to achieve super IOT, and machine learning techniques are promising candidates for AI. 6G will have frequencies ranging from 100 GHz to 3THz because wide band unutilized spectrum are unexplored to some extent and can hence be used for high frequency transmission of data. Initial research on this frequency range presents some of the discoveries that are quite promising, unconventional techniques, and latest effects, so one can use the resourceful data to improve and implement the 6G technology of wireless networks. In the current case, 6G networks will suffice the user needs of data rate that is sufficiently faster without any network interrupts. In this paper, comparison between 5G and 6G is discussed and how AI, Intelligent radio will help in achieving smart communication. 6G will be a quickest and quite effective wireless communication technology due to full duplex radio wave transmission capability. The most important purpose of these studies is to implement 6G networks throughout the world that can assist numerous emerging communication technologies to achieve very high speed data transfer at a very less cost with reliability.