With the rapid development of communication networks, it is expected that fourth generation mobile systems will be launched within decades. Fourth generation (4G) mobile systems focus on seamlessly integrating the existing wireless technologies including GSM, wireless LAN, and Bluetooth. This contrasts with third generation (3G), which merely focuses on developing new standards and hardware. 4G systems will support comprehensive and personalized services providing stable system performance and quality service. This paper gives the details about the need for mobile communication and its development in various generations. In addition, the details about the working of 4G mobile communication were given. Finally, it narrates how 4G mobile communication will bring a new level of connectivity and convenience in communication.