From past year wireless technology has made enormous development. The development of wireless technology is reached at 7.5G. Wireless technology FG (Future generation) portable communications will have higher information transmission rates in 6G and 7G. Over the past decade, wireless technology has experienced enormous development. Surveys have shown that another wireless subscriber signs up every 2.5 seconds. Be that as it may, wireless is not an ongoing technology. Several wireless technologies are accessible with their own advantages and disadvantages. Current times are just the start of sending 5G versatile correspondence systems. At present we have numerous technologies each fit for performing functions like supporting voice traffic using voice over IP (VoIP), broadband information access in versatile condition and so forth., however, there is an incredible need of sending such technologies that can incorporate every one of these systems into a single brought together system. In this paper we present the study of several generations that are being used 0G, 1G, 2G, 3G, 4G, and 5G and attempt to locate some people in the future which are under research like 6G, and 7G. Comparison is made among all the generations and every generation's functions, execution, and usage of technology are clarified in the paper