On 20 May 2010, the SDK for Android 2.2 (Froyo, short for frozen yogurt) was released, based on Linux kernel 2.6.32.
Android 2.2 Froyo
Release date: 20 May 2010
Features:- Speed, memory, and performance optimizations
- Additional application speed improvements, implemented through JIT compilation
- Integration of Chrome's V8 JavaScript engine into the Browser application
- Support for the Android Cloud to Device Messaging (C2DM) service, enabling push notifications
- Improved Microsoft Exchange support, including security policies, auto-discovery, GAL look-up, calendar synchronization and remote wipe
- Improved application launcher with shortcuts to Phone and Browser applications
- USB tethering and Wi-Fi hotspot functionality
- Option to disable data access over mobile network
- Updated Market application with batch and automatic update features
- Quick switching between multiple keyboard languages and their dictionaries
- Support for Bluetooth-enabled car and desk docks
- Support for numeric and alphanumeric passwords
- Support for file upload fields in the Browser application
- The browser now shows all frames of animated GIFs instead of just the first frame only
- Support for installing applications to the expandable memory
- Adobe Flash support
- Support for high-PPI displays (up to 320 ppi), such as 4" 720p screens
- Gallery allows users to view picture stacks using a zoom gesture
Android 2.2.1 Froyo
Release date: 18 January 2011
Features:- Bug fixes, security updates and performance improvements
Android 2.2.2 Froyo
Release date: 22 January 2011
Features:- Minor bug fixes, including SMS routing issues that affected the Nexus One
Android 2.2.3 Froyo
Release date: 21 November 2011
Features:- Two security patches
