Android OS Features !!

The Android operating system is based on the free, open-source GNU/Linux operating system. The system itself is a Java VM running on top of the Linux kernel, creating an extensible and highly configurable environment. Developers have taken advantage of this to rapidly expand the features of Android and create a smartphone operating system with a lot packed into its shell.

User Interface

The user interface, or UI, takes mostly touchscreen input. While many Android device manufacturers add a custom software keyboard of their own, the default Android keyboard provides for quick, intuitive text input. When working with text, Android supports multi-touch screens that allow for pinch-to-zoom and multi-finger selection. Since the interface is designed to be universal across the entire system, users experience a single user interface for all interactions with their devices. This reduces Android's learning curve for non-advanced users.

Communication

The latest version of Android, version 2.3, brings native Session Initiation Protocol, or SIP, support to the system, enabling Voice over Internet Protocol, or VoIP. Additionally, the native email client in Android supports Push, enabling up-to-date email. While Google provides Talk, a Google Talk app for chatting with other Gmail users, there is not additional built-in instant messaging protocol support. However, there are a number of third-party apps that provide AIM, ICQ, MSN and other popular chat protocols.

Media

Depending on the smartphone's processor, Android can play and record high-definition video. Both the popular MP4 and H.264 mobile video formats are supported, and other applications provide additional codec support. Android also comes with the ability to play a number of audio formats, including AAC, MP3, FLAC and others. As of Android 2.3, the operating system not only supports a digital camera, but also has native support for two cameras to facilitate video calling.

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