This article provides a comprehensive guide on integrating real-time chat features into Android applications using the capabilities of the VideoSDK. It covers essential steps for building video calling functionality, including generating a meeting ID, initializing the meeting, handling local participant media, and managing participants' views. Additionally, it delves into implementing group and private chat functionalities within an Android video chat app using pubSub class. The guide empowers developers to create dynamic and immersive user experiences with robust communication capabilities in their applications.