This document discusses the evolution of mobile phone technology from 0G to 6G. It provides an overview of each generation including the technologies used and key features. 0G introduced basic voice communication capabilities. 1G allowed voice calls within one country using analog signals. 2G brought digital voice transmission and SMS. 2.5G combined 2G with GPRS for improved data services. 3G increased speeds and introduced capabilities like video calling and mobile TV. 4G provided speeds up to 1Gbps for multimedia and broadband services. 5G is expected to offer speeds over 1Gbps and support new applications through its open wireless architecture. 6G is predicted to offer terabit speeds with zero distance connectivity and maximum data throughput.