Develop a comprehensive Android video chat application using Firebase and Android Studio in this extensive tutorial series. Learn to create a fully functional video calling app similar to Skype and FaceTime, covering essential topics such as connecting your Android project to Firebase, implementing phone authentication with OTP, designing a bottom navigation bar, creating a chat UI, and querying Firebase database. Master the fundamentals of live streaming and video call functionality in Android, making this tutorial ideal for beginners and intermediate developers looking to enhance their skills in mobile app development.