This document summarizes emerging cellular technologies from 1G to 7G. It provides details on each generation including key features and drawbacks. 1G allowed analog voice calls with speeds up to 2.4 kbps. 2G introduced digital networks with speeds up to 64 kbps and basic data services. 3G enabled broadband connectivity for mobile internet with speeds from 144 kbps to 2 Mbps. 4G has speeds over 20 Mbps for video calling and mobile applications. 5G is expected to offer speeds over 1 Gbps for advanced applications. 6G and 7G technologies are still in development with a focus on global coverage and satellite connectivity.