Awesome Chat - Android Firebase Realtime Mobile Application is a beautiful native Android application built for real-time chat. It is designed according to the latest UI and UX studies and rules.

1. Real-Time Database: Firebase Realtime Database is at the core of Firebase's real-time features. It allows you to store and sync data in real-time, making it perfect for chat applications. You can use this to implement features like real-time messaging, live updates, and more.

2. Authentication: Firebase Authentication provides easy user authentication, which is essential for most apps. It supports various sign-in methods, such as email/password, Google, Facebook, and more. This helps secure your app and allows user-specific data storage.

3. Cloud Firestore: Firebase Cloud Firestore is another NoSQL database offering by Firebase, which is great for building more complex data structures. It's a good option for building scalable applications and provides real-time synchronization of data.

4. Push Notifications: Firebase Cloud Messaging (FCM) allows you to send push notifications to Android devices. You can use this for real-time alerts and updates in your app.

5. Storage: Firebase Storage lets you store and serve user-generated content, such as images, videos, and other media. You can also use it for file sharing in a real-time chat app.

6. Authentication State Monitoring: Firebase offers tools to monitor the authentication state, so you can customize the user experience depending on whether the user is logged in or not.

7. User Presence: Implement user presence features, such as showing online/offline status for chat users. Firebase Realtime Database can help with this.

8. Real-Time Analytics: Firebase Analytics can provide insights into user behavior in real-time. You can use this data to improve the user experience.

9. Cloud Functions: Extend your app's functionality with Cloud Functions for Firebase. This allows you to run server-side code in response to events in your Firebase services, which is great for implementing real-time features like message processing.

10. Data Security Rules: Define security rules in Firebase to ensure that data is accessed and modified only by authorized users. This is crucial for keeping your real-time data safe.

11. Offline Support: Firebase's real-time database and Firestore work seamlessly offline, syncing data when the device is back online. This is essential for ensuring that your app remains functional even in areas with poor connectivity.

12. User Authentication with Custom Claims: You can use custom claims to grant or restrict access to certain features or data within your app based on user roles, such as admin, moderator, or standard user.

13. Integration with Other Firebase Services: Firebase offers various other services like Firebase Hosting, Firebase Performance Monitoring, and Firebase Test Lab, which can be integrated into your application to improve user experience and app performance.

14. AdMob Integration: If you plan to monetize your app, Firebase can be integrated with AdMob to serve ads and track ad performance.

15. Remote Config: Firebase Remote Config lets you change the appearance and behavior of your app without publishing an app update. This can be used to make real-time changes to your app's UI or behavior.