Android version history : Android 2.3.x Gingerbread

2.3 Based on Linux kernel 2.6.35.On 6 December 2010, the 2.3 (Gingerbread) SDK was released. Changes included: System: Updated user interface design for simplicity and speed Display: Support for extra-large screen sizes and resolutions (WXGA and higher) Internet calling: Native support for SIP VoIP telephony Virtual Keyboard: Faster, more intuitive text input, improved accuracy, better suggested text. Voice input mode Copy/Paste: Enhanced. Select a word by press-hold, copy, and paste Near Field Communication lets the user read an NFC tag embedded in a poster, sticker, or advertisement New audio effects such as reverb, equalization, headphone virtualization, and bass boost New Download Manager giving users easy access to any file downloaded from the browser, email, or another application Camera: Access multiple cameras on the device, including a front-facing camera, if available Media: Support for WebM/VP8 video playback, and AAC audio encoding System: Improved power management with a more active role in managing apps that are keeping the device awake for too long System: Enhanced support for native code development System: Switched from YAFFS to ext4 on newer devices Audio, graphical, and input enhancements for game developers Concurrent garbage collection for increased performance Native support for more sensors (such as gyroscopes and barometers) 2.3.3 Several improvements and APIs to the Android 2.3 platform. 2.3.4 Support for voice or video chat using Google Talk. 2.3.5 25 Jul 2011 Brought improved network performance for the Nexus S 4G, among other fixes and improvements. Fixed Bluetooth bug on Samsung Galaxy S Improved Gmail application 2.3.6 Voice search bug fixed. 2.3.7 Google Wallet support for Nexus S 4G