Android 3.1

Android 3.1 is a second version of Android 3.x, which was released on 10 May 2011. It was released only for tablets.

New features

 * UI Updates
 * Resizable home screen widgets
 * Support for external keyboards and mouses
 * Support for joysticks and gamepads
 * Support for HTTP proxy for each connected Wi-Fi access point
 * Bugfixes
 * Security Updates
 * Stability Improvements