An all-new Chat Resource Center has been launched, offering comprehensive overviews, tutorials, and design patterns for mobile and web chat development. Recent updates include a new Android WebRTC signaling API, which facilitates the creation of cross-platform WebRTC applications for mobile and web, allowing users to build native video and voice applications on Android. The tutorial provided gives a detailed walkthrough of building a mobile chat app similar to Skype for Android, covering aspects like signaling, interface design, incoming call management, real-time buddy lists, and text messaging. The Android WebRTC SDK ensures full compatibility with the JavaScript WebRTC SDK, enabling seamless mobile-to-web and web-to-mobile communication without additional technology. Users are encouraged to explore the web demo to experience real-time signaling between browsers and the Android application.