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Android Version History by API level


Android 5.0 Lollipop (API level 21)
    5.0 - November 12, 2014
    • Android Runtime (ART) with ahead-of-time (AOT) compilation and improved garbage collection (GC), replacing Dalvik that uses just-in-time (JIT) compilation
    • Support for 64-bit CPUs
    • OpenGL ES 3.1 and Android Extension Pack (AEP) on supported GPU configurations
    • Recent activities screen with tasks instead of applications, up to a configured maximum of tasks per application
    • Vector drawables, which scale without losing definition
    • Support for print previews
    • Material design style, bringing improvements to user interface
    • Refreshed lock screen
    • Refreshed notification tray and quick settings pull-down
    • Project Volta, for battery life improvements
    • Searches can be performed within the system settings for quicker access to particular settings
    • Lock screen provides shortcuts to application and notification settings
    • Guest logins and multiple user accounts are available on more devices, such as phones.
    • Audio input and output through USB devices
    • Third-party applications regain the ability to read and modify data located anywhere on external storage, such as on SD cards.
    • Pinning of an application's screen for restricted user activity.
    • Recently used applications are remembered even after restarting the device.
    • WebViews receive updates independently through Google Play for security reasons, instead of relying on system-wide vendor updates
    • Addition of 15 new languages: Basque, Bengali, Burmese, Chinese (Hong Kong), Galician, Icelandic, Kannada, Kyrgyz, Macedonian, Malayalam, Marathi, Nepali, Sinhala, Tamil and Telugu
    • Tap and Go allows users to quickly migrate to a new Android device, using NFC and Bluetooth to transfer Google Account details, configuration settings, user data and installed applications.
    • A flashlight-style application is included, working on supported devices with a camera flash.
    • User-customizable priorities for application notifications
    5.0.1 - December 2, 2014
    • A few bugfixes, including resolving issues with video playback and password failures handling
    5.0.2 - December 19, 2014
    • Fixes a bug with TRIM support, which prevented devices from the nightly on-charger cleanups of file system allocations if the device was turned off while being charged, or if it was charged during the day
    • Changes how alarms wake the CPU, and how alarms compete for system resources

    Android 4.4 KitKat with wearable extensions (API level 20)
      4.4w
      • Same as Android 4.4 KitKat, but with wearable extensions added

      Android 4.4 KitKat (API level 19)
        4.4 - October 31, 2013
        • Refreshed interface with white elements instead of blue
        • Clock no longer shows bold hours, all digits are thin. The H, M, and S markings for the stopwatch and timer have been removed, leaving just the numbers.
        • Ability for applications to trigger translucency in the navigation and status bars
        • Ability for applications to use "immersive mode" to keep the navigation and status bars hidden while maintaining user interaction
        • Action overflow menu buttons are always visible, even on devices with a "Menu" key, which was officially deprecated by Android 4.0.
        • Optimizations for performance on devices with lower specifications, including zRAM support and "low RAM" device API
        • Wireless printing capability
        • NFC host card emulation, enabling a device to replace smart cards
        • WebViews now based on Chromium engine (feature parity with Chrome for Android 30)
        • Expanded functionality for notification listener services
        • Public API for developing and managing text messaging clients
        • New framework for UI transitions
        • Storage Access Framework, an API allowing apps to retrieve files in a consistent manner. As part of the framework, a new system file picker allows users to access files from various sources (including those exposed by apps, such as online storage services).
        • Sensor batching, step detector and counter APIs
        • Settings application now makes it possible to select default text messaging and home (launcher) application
        • Audio tunneling, audio monitoring and loudness enhancer
        • Built-in screen recording feature (primarily for developers, as usage of ADB is required)
        • Native infrared blaster API
        • Expanded accessibility APIs and system-level closed captioning settings
        • Android Runtime (ART) introduced as a new experimental application runtime environment, not enabled by default, as a replacement for the Dalvik virtual machine
        • Bluetooth Message Access Profile (MAP) support
        • Disabled access to battery statistics by third-party applications
        • Settings application no longer uses a multi-pane layout on devices with larger screens
        • Wi-Fi and mobile data activity (TX/RX) indicators are moved to quick settings
        • Browser text wrap is disabled.
        4.4.1 - December 5, 2013
        • Improvements to auto focus, white balance and HDR+ for the Nexus 5 camera
        • Better application compatibility for the experimental Android Runtime (ART)
        • Camera application now loads Google+ Photos instead of Gallery when swiping away from the camera view
        • Miscellaneous improvements and bug fixes
        4.4.2 - December 9, 2013
        • Further security enhancements and bug fixes
        • Removal of the "App Ops" application permissions control system, introduced in Android 4.3
        4.4.3 - June 2, 2014
        • Refreshed Dialer app interface
        • Updated the Chromium based WebView to version 33 (screencasting to DevTools, HTML5 Canvas hardware acceleration performance improvements, vibration API, HTML5 form validation, HTML5 datalist)
        • Miscellaneous improvements and bug fixes
        4.4.4 - June 19, 2014
        • CVE-2014-0224 fixed, eliminating an OpenSSL man-in-the-middle vulnerability.

        Android 4.3 Jelly Bean (API level 18)
          4.3 - July 24, 2013
          • Bluetooth low energy support.
          • Bluetooth Audio/Video Remote Control Profile (AVRCP) 1.3 support
          • OpenGL ES 3.0 support, allowing for improved game graphics
          • Restricted access mode for new user profiles
          • Filesystem write performance improvement by running fstrim command while device is idle
          • Dial pad auto-complete in the Phone application
          • Improvements to Photo Sphere
          • Reworked camera UI, previously introduced on Google Play edition phones
          • Addition of "App Ops", a fine-grained application permissions control system (hidden by default)
          • 4K resolution support
          • Many security enhancements, performance enhancements, and bug fixes
          • System-level support for geofencing and Wi-Fi scanning APIs
          • Background Wi-Fi location still runs even when Wi-Fi is turned off
          • Developer logging and analyzing enhancements
          • Added support for five more languages
          • Improved digital rights management (DRM) APIs
          • Right-to-left (RTL) languages now supported
          • Clock in the status bar disappears if clock is selected as lockscreen widget
          4.3.1 - October 3, 2013
          • Bug fixes and small tweaks for the Nexus 7 LTE

          Android 4.2 Jelly Bean (API level 17)
            4.2 - November 13, 2012
            • Lock screen improvements, including widget support and the ability to swipe directly to camera
            • Notification power controls ("Quick Settings")
            • "Daydream" screensavers, showing information when idle or docked
            • Multiple user accounts (tablets only)
            • Rewritten Bluetooth stack, switching from Bluez to Broadcom open source BlueDroid,[105] allowing improved support for multiple displays and wireless display (Miracast)
            • Native right-to-left, always-on VPN and application verification.[106] A new NFC stack was added at the same time.
            • Accessibility improvements: triple-tap to magnify the entire screen, pan and zoom with two fingers. Speech output and Gesture Mode navigation for blind users
            • New clock application with built-in world clock, stop watch and timer
            • All devices now use the same interface layout, previously adapted from phones on 4.1 for smaller tablets (with centered software buttons, the system bar at the top of the screen, and a home screen with a dock and centered application menu), regardless of screen size
            • Increased number of extended notifications and Actionable Notifications for more applications, allowing users to respond to certain notifications within the notification bar and without launching the application directly
            • SELinux
            • Premium SMS confirmation
            • Group Messaging
            4.2.1 - November 27, 2012
            • Fixed a bug in the People application where December was not displayed on the date selector when adding an event to a contact
            • Added Bluetooth gamepads and joysticks as supported HID (Human interface device)
            4.2.2 - February 11, 2013
            • Fixed Bluetooth audio streaming bugs
            • Long-pressing the Wi-Fi and Bluetooth icons in Quick Settings now toggles the on/off state
            • New download notifications, which now shows the percentage and estimated time remaining for active application downloads
            • New sounds for wireless charging and low battery
            • New Gallery application animation allows faster loading
            • USB debug whitelist
            • Bug fixes and performance enhancements

            Android 4.1 Jelly Bean (API level 16)
              4.1 - July 9, 2012
              • Smoother user interface:
                • Vsync timing across all drawing and animation done by the Android framework, including application rendering, touch events, screen composition and display refresh
                • Triple buffering in the graphics pipeline
              • Enhanced accessibility
              • Bi-directional text and other language support
              • User-installable keyboard maps
              • Expandable notifications
              • Ability to turn off notifications on an application-specific basis
              • Shortcuts and widgets can automatically be re-arranged or re-sized to allow new items to fit on home screens
              • Bluetooth data transfer for Android Beam
              • Tablets with smaller screens now use an expanded version of the interface layout and home screen used by phones.
              • Improved camera application
              • Multichannel audio
              • The Fraunhofer FDK AAC codec becomes standard in Android, adding AAC 5.1 channel encoding/decoding.
              • USB audio (for external sound DACs)
              • Audio chaining (also known as gapless playback)
              • Ability for other launchers to add widgets from the application drawer without requiring root access
              4.1.1 - July 11, 2012
              • Fixed a bug on the Nexus 7 regarding the inability to change screen orientation in any application
              4.1.2 - October 9, 2012
              • Lock/home screen rotation support for the Nexus 7
              • One-finger gestures to expand/collapse notifications
              • Bug fixes and performance enhancements
              Android 4.0.3–4.0.4 Ice Cream Sandwich (API level 15)
                4.0.3 - December 16, 2011
                • Numerous bug fixes and optimizations
                • Improvements to graphics, databases, spell-checking and Bluetooth functionality
                • New APIs for developers, including a social stream API in the Contacts provider
                • Calendar provider enhancements
                • New camera applications enhancing video stabilization and QVGA resolution
                • Accessibility refinements such as improved content access for screen readers
                4.0.4 - March 29, 2012
                • Stability improvements
                • Better camera performance
                • Smoother screen rotation
                • Improved phone number recognition

                Android 4.0–4.0.2 Ice Cream Sandwich (API level 14)
                  4.0 - October 18, 2011
                  • Major refinements to the "Holo" interface with new Roboto font family
                  • Soft buttons from Android 3.x are now available for use on phones
                  • Separation of widgets in a new tab, listed in a similar manner to applications
                  • Easier-to-create folders, with a drag-and-drop style
                  • Improved visual voicemail with the ability to speed up or slow down voicemail messages
                  • Pinch-to-zoom functionality in the calendar
                  • Integrated screenshot capture (accomplished by holding down the Power and Volume-Down buttons)
                  • Improved error correction on the keyboard
                  • Ability to access applications directly from lock screen
                  • Improved copy and paste functionality
                  • Better voice integration and continuous, real-time speech to text dictation
                  • Face Unlock, a feature that allows users to unlock handsets using facial recognition software
                  • Automatic syncing of browser with users' Chrome bookmarks
                  • Data Usage section in settings that lets users set warnings when they approach a certain usage limit, and disable data use when the limit is exceeded
                  • Ability to shut down applications from the recent apps list with a swipe.
                  • Improved camera application with zero shutter lag, time lapse settings, panorama mode, and the ability to zoom while recording
                  • Built-in photo editor
                  • New gallery layout, organized by location and person
                  • Refreshed "People" application with social network integration, status updates and hi-res images
                  • Android Beam, a near-field communication feature allowing the rapid short-range exchange of web bookmarks, contact info, directions, YouTube videos and other data
                  • Support for the WebP image format
                  • Hardware acceleration of the UI
                  • Wi-Fi Direct
                  • 1080p video recording for stock Android devices
                  • Android VPN Framework (AVF), and TUN (but not TAP) kernel module. Prior to 4.0, VPN software required rooted Android.
                  4.0.1 - October 21, 2011
                  • Fixed minor bugs for the Samsung Galaxy Nexus.
                  4.0.2 - November 28, 2011
                  • Fixed minor bugs on the Verizon Galaxy Nexus, the US launch of which was later delayed until December 2011

                  Android 3.2 Honeycomb (API level 13)
                    3.2 - July 15, 2011
                    • Improved hardware support, including optimizations for a wider range of tablets
                    • Increased ability of applications to access files on the SD card, e.g. for synchronization
                    • Compatibility display mode for applications that have not been optimized for tablet screen resolutions
                    • New display support functions, giving developers more control over display appearance on different Android devices
                    3.2.1 - September 20, 2011
                    • Bug fixes and minor security, stability and Wi-Fi improvements
                    • Update to Android Market with automatic updates and easier-to-read Terms and Conditions text
                    • Update to Google Books
                    • Improved Adobe Flash support in browser
                    • Improved Chinese handwriting prediction
                    3.2.2 - August 30, 2011
                    • Bug fixes and other minor improvements for the Motorola Xoom 4G
                    3.2.3
                    • Bug fixes and other minor improvements for the Motorola Xoom and Motorola Xoom 4G
                    3.2.4 - December 2011
                    • "Pay as You Go" support for 3G and 4G tablets
                    3.2.5 - January 2012
                    • Bug fixes and other minor improvements for the Motorola Xoom and Motorola Xoom 4G
                    3.2.6 - February 2012
                    • Fixed data connectivity issues when coming out of airplane mode on the US 4G Motorola Xoom

                    Android 3.1 Honeycomb (API level 12)
                      3.1 - May 10, 2011
                      • UI refinements
                      • Connectivity for USB accessories (USB On-The-Go).
                      • Expanded Recent Applications 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
                      Android 3.0 Honeycomb (API level 11)
                        3.0 - February 22, 2011
                        • Optimized tablet support with a new “holographic” user interface
                        • Added System Bar, featuring quick access to notifications, status, and soft navigation buttons, available at the bottom of the screen
                        • Added Action Bar, giving access to contextual options, navigation, widgets, or other types of content at the top of the screen
                        • Simplified multitasking – tapping Recent Applications in the System Bar allows users to see snapshots of the tasks underway and quickly jump from one application to another
                        • Redesigned keyboard, making typing fast, efficient and accurate on larger screen sizes
                        • Simplified, more intuitive copy/paste interface
                        • Multiple browser tabs replacing browser windows, plus form auto-fill and a new “incognito” mode allowing anonymous browsing
                        • Quick access to camera exposure, focus, flash, zoom, front-facing camera, time-lapse, and other camera features
                        • Ability to view albums and other collections in full-screen mode in Gallery, with easy access to thumbnails for other photos
                        • New two-pane Contacts UI and Fast Scroll to let users easily organize and locate contacts
                        • New two-pane Email UI to make viewing and organizing messages more efficient, allowing users to select one or more messages
                        • Hardware acceleration
                        • Support for multi-core processors
                        • Ability to encrypt all user data
                        • HTTPS stack improved with Server Name Indication (SNI)
                        • Filesystem in Userspace (FUSE; kernel module)
                        • Applications write access to secondary storage (memory cards on devices with internal primary storage) is disabled outside of designated, app-specific directories, while full access to internal primary storage is still allowed through a separate application-level permission.
                        Android 2.3.3–2.3.7 Gingerbread (API level 10)
                          2.3.3 - February 9, 2011
                          • Several improvements and API fixes
                          2.3.4 - April 28, 2011
                          • Support for voice or video chat using Google Talk
                          • Open Accessory Library support. Open Accessory was introduced in 3.1 (Honeycomb) but the Open Accessory Library grants 2.3.4 added support when connecting to a USB peripheral with compatible software and a compatible application on the device
                          • Switched the default encryption for SSL from AES256-SHA to RC4-MD5.
                          2.3.5 - July 25, 2011
                          • Improved network performance for the Nexus S 4G, among other fixes and improvements
                          • Fixed Bluetooth bug on Samsung Galaxy S
                          • Improved Gmail application
                          • Shadow animations for list scrolling
                          • Camera software enhancements
                          • Improved battery efficiency
                          2.3.6 - September 2, 2011
                          • Fixed a voice search bug
                          • (The 2.3.6 update had the side-effect of impairing the Wi-Fi hotspot functionality of many Canadian Nexus S phones. Google acknowledged this problem and fixed it in late September.)
                          2.3.7 - September 21, 2011
                          • Google Wallet support for the Nexus S 4G

                          Android 2.3–2.3.2 Gingerbread (API level 9)
                            2.3 - December 6, 2010
                            • Updated user interface design with increased simplicity and speed
                            • Support for extra-large screen sizes and resolutions (WXGA and higher)
                            • Native support for SIP VoIP internet telephony
                            • Faster, more intuitive text input in virtual keyboard, with improved accuracy, better suggested text and voice input mode
                            • Enhanced copy/paste functionality, allowing users to select a word by press-hold, copy, and paste
                            • Support for Near Field Communication (NFC), allowing the user to 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
                            • Support for multiple cameras on the device, including a front-facing camera, if available
                            • Support for WebM/VP8 video playback, and AAC audio encoding
                            • Improved power management with a more active role in managing applications that are keeping the device awake for too long
                            • Enhanced support for native code development
                            • 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)
                            2.3.1 - December 2010
                            • Improvements and bug fixes for the Google Nexus S
                            2.3.2 - January 2011
                            • Improvements and bug fixes for the Google Nexus S

                            Android 2.2–2.2.3 Froyo (API level 8)
                              2.2 - May 20, 2010
                              • 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
                              2.2.1 - January 18, 2011
                              • Bug fixes, security updates and performance improvements
                              2.2.2 - January 22, 2011
                              • Minor bug fixes, including SMS routing issues that affected the Nexus One
                              2.2.3 - November 21, 2011
                              • Two security patches

                              Android 2.1 Eclair (API level 7)
                                2.1 - January 12, 2010
                                • Minor amendments to the API and bug fixes

                                Android 2.0.1 Eclair (API level 6)
                                  2.0.1 - December 3, 2009
                                  • Minor API changes, bug fixes and framework behavioral changes

                                  Android 2.0 Eclair (API level 5)
                                    2.0 - October 26, 2009
                                    • Expanded Account sync, allowing users to add multiple accounts to a device for synchronization of email and contacts
                                    • Microsoft Exchange email support, with combined inbox to browse email from multiple accounts in one page
                                    • Bluetooth 2.1 support
                                    • Ability to tap a Contacts photo and select to call, SMS, or email the person
                                    • Ability to search all saved SMS and MMS messages, with delete oldest messages in a conversation automatically deleted when a defined limit is reached
                                    • Numerous new camera features, including flash support, digital zoom, scene mode, white balance, color effect and macro focus
                                    • Improved typing speed on virtual keyboard, with smarter dictionary that learns from word usage and includes contact names as suggestions
                                    • Refreshed browser UI with bookmark thumbnails, double-tap zoom and support for HTML5
                                    • Calendar agenda view enhanced, showing attending status for each invitee, and ability to invite new guests to events
                                    • Optimized hardware speed and revamped UI
                                    • Support for more screen sizes and resolutions, with better contrast ratio
                                    • Improved Google Maps 3.1.2
                                    • MotionEvent class enhanced to track multi-touch events
                                    • Addition of live wallpapers, allowing the animation of home-screen background images to show movement

                                    Android 1.6 Donut (API level 4)
                                      1.6 - September 15, 2009
                                      • Voice and text entry search enhanced to include bookmark history, contacts, and the web
                                      • Ability for developers to include their content in search results
                                      • Multi-lingual speech synthesis engine to allow any Android application to "speak" a string of text
                                      • Easier searching and ability to view app screenshots in Android Market
                                      • Gallery, camera and camcorder more fully integrated, with faster camera access
                                      • Ability for users to select multiple photos for deletion
                                      • Updated technology support for CDMA/EVDO, 802.1x, VPNs, and a text-to-speech engine
                                      • Support for WVGA screen resolutions
                                      • Speed improvements in searching and camera applications
                                      • Expanded Gesture framework and new GestureBuilder development tool

                                      Android 1.5 Cupcake (API level 3)
                                        1.5 - April 27, 2009
                                        • Support for third-party virtual keyboards with text prediction and user dictionary for custom words
                                        • Support for Widgets – miniature application views that can be embedded in other applications (such as the Home screen) and receive periodic updates
                                        • Video recording and playback in MPEG-4 and 3GP formats
                                        • Auto-pairing and stereo support for Bluetooth (A2DP and AVRCP profiles)
                                        • Copy and paste features in web browser
                                        • User pictures shown for Favorites in Contacts
                                        • Specific date/time stamp shown for events in call log, and one-touch access to a contact card from call log event
                                        • Animated screen transitions
                                        • Auto-rotation option
                                        • New stock boot animation
                                        • Ability to upload videos to YouTube
                                        • Ability to upload photos to Picasa

                                        Android 1.1 (API level 2)
                                          1.1 - February 9, 2009
                                          • Details and reviews available when a user searches for businesses on Maps
                                          • Longer in-call screen timeout default when using the speakerphone, plus ability to show/hide dialpad
                                          • Ability to save attachments in messages
                                          • Support added for marquee in system layouts

                                          Android 1.0 (API level 1)
                                            1.0 - September 23, 2008
                                            • Android Market application download and updates through the Market application
                                            • Web browser to show, zoom and pan full HTML and XHTML web pages – multiple pages show as windows ("cards")
                                            • Camera support – however, this version lacked the option to change the camera's resolution, white balance, quality, etc.[20]
                                            • Folders allowing the grouping of a number of application icons into a single folder icon on the Home screen
                                            • Access to web email servers, supporting POP3, IMAP4, and SMTP
                                            • Gmail synchronization with the Gmail application
                                            • Google Contacts synchronization with the People application
                                            • Google Calendar synchronization with the Calendar application
                                            • Google Maps with Street View to view maps and satellite imagery, as well as find local business and obtain driving directions using GPS
                                            • Google Sync, allowing management of over-the-air synchronization of Gmail, People, and Calendar
                                            • Google Search, allowing users to search the Internet and phone applications, contacts, calendar, etc.
                                            • Google Talk instant messaging
                                            • Instant messaging, text messaging, and MMS
                                            • Media Player, enabling management, importing, and playback of media files – however, this version lacked video and stereo Bluetooth support
                                            • Notifications appear in the Status bar, with options to set ringtone, LED or vibration alerts
                                            • Voice Dialer allows dialing and placing of phone calls without typing a name or number
                                            • Wallpaper allows the user to set the background image or photo behind the Home screen icons and widgets
                                            • YouTube video player
                                            • Other applications include: Alarm Clock, Calculator, Dialer (Phone), Home screen (Launcher), Pictures (Gallery), and Settings
                                            • Wi-Fi and Bluetooth support

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