Android 3.1 Honeycomb

Android 3.1 Honeycomb is a version of Android that was released on 10 May 2011. Its predecessor was Android 3.0 Honeycomb and its successor was Android 3.2 Honeycomb. The first device featuring this version, the Motorola Xoom tablet, was released on 24 February 2011. Changes are listed below. Android 3.1 latest release on February 15 2011 as android 3.2.6. Android 3.1 support ended on November 14 2016.

Changed in 3.1
Changes included:
 * UI refinements
 * Connectivity for USB accessories
 * Expanded Recent Apps list
 * Resizable Home screen widgets
 * Support for external keyboards and pointing devices
 * Support for joysticks and gamepads
 * Support for FLAC audio playback
 * High-performance Wi-Fi lock, maintaining high-performance Wi-Fi connections when device screen is off
 * Support for HTTP proxy for each connected Wi-Fi access point