Version history by API level

Android 14 (API level 34)
14 - October 4, 2023
  • Installation of apps designed to target Android versions and SDKs older than Marshmallow (6.0) is blocked to prevent malware.
Android 13 (API level 33)
13 - August 15, 2022
  • Apps are now required to request permission from the user before they are able to send notifications.
  • The number of active apps is now shown at the bottom of the notifications panel, a tap on it opens a detailed panel which lets the user stop each of them.
  • Support for Bluetooth LE Audio and the LC3 audio codec.
  • ART update with a new garbage collector utilizing the Linux userfaultfd system call. It reduces memory pressure, compiled code size, jank[clarification needed] and prevents the risk of killing apps because of low memory during garbage collection. Other changes also improve app startup, reduce jank and improve performance. Because of the Mainline project, Android 12 ART will also be updated.
  • Support of Themed icons by third-party apps and manufacturers.
Android 12L (API level 32)
12L - March 7, 2022

Improvements specific for foldable phones, tablets, desktop-sized screens and Chromebooks, and modifications to the user interface to tailor it to larger screens.

Android 12 (API level 31)
12 - October 4, 2021
  • Easier Wi-Fi sharing.
  • AVIF image support.
  • Material You, an updated design language based on Material Design.
  • Scrolling Screenshot.
  • One Handed Mode.
  • Android Runtime (ART) module added to the updatable core OS components via Google Play, added functionality to existing modules.
  • Area Magnification can zoom in any content on device.
  • Extra Dim is a faint level of brightness not accessible by the brightness scale.
  • Bold Text.
  • Greyscale.
  • Mic and Camera indicator and toggle.[citation needed]
  • Option to choose precise or approximate location.
  • Privacy Dashboard.
  • Gestures can work in immersive mode.
  • Performance improvements to system services to improve transitions, power efficiency, and reduce app startup times.
  • Third party app stores now have the ability to update apps without constantly asking the user for permission.
Android 11 (API level 30)
11 - September 8, 2020
  • Chat bubbles.
  • Screen recorder.
  • Notification history.
  • New permissions controls.
  • API distinction between standalone 5G NR and non-standalone 5G.
  • One-time permissions.
  • Permissions auto-reset.
  • Wireless Android Auto on devices with 5GHz Wi-Fi.
  • Increased number of updatable core OS components in Google Play from 12 to 21.
  • Enterprise work profile privacy protections now apply on company-owned devices.
  • Independent left and right edge sensitivity for gesture navigation.
Android 10 (API level 29)
10 - September 3, 2019
  • Revamped full-screen gesture navigation with new app open/close animations.
  • Scoped storage restrictions
  • New permissions required to access location in background and to access photo, video and audio files.
  • Background apps can no longer jump into the foreground.
  • Limited access to non-resettable device identifiers.
  • Background (idle) access to camera, microphone and sensors disabled for more privacy protection with the side effect of disabling antitheft software.
  • Sharing shortcuts, which allow sharing content with a contact directly.
  • Floating settings panel, that allows changing system settings directly from apps.
  • Dynamic depth format for photos, which allow changing background blur after taking a photo.
  • Support for the AV1 video codec, the HDR10+ video format and the Opus audio codec.
  • Support for aptX Adaptive, LHDC, LLAC, CELT and AAC LATM codecs
  • A native MIDI API, allowing interaction with music controllers.
  • Better support for biometric authentication in apps.
  • Support for the WPA3 Wi-Fi security protocol.
  • Support for foldable phones.
  • Support for Notification Bubbles.
  • New system-wide dark theme/mode
  • TLS v1.3 support added.
  • Project Mainline, allows core OS components to be updated via the Google Play Store, without requiring a complete system update
Android 9 Pie (API level 28)
9 - August 6, 2018
  • New user interface for the quick settings menu.
  • The clock has moved to the left of the notification bar.
  • The "dock" now has a semi-transparent background.
  • Battery Saver no longer shows an orange overlay on the notification and status bars.
  • A "screenshot" button has been added to the power options.
  • A new "Lockdown" mode which disables biometric authentication once activated.
  • Rounded corners across the UI.
  • New transitions for switching between apps, or activities within apps.
  • Richer messaging notifications, where a full conversation can be seen within a notification, full-scale images, and smart replies akin to Google's new app, Reply.
  • Support for display cutouts.
  • Redesigned volume slider.
  • Battery percentage now shown in Always-On Display.
  • Lock screen security changes include the possible return of an improved NFC Unlock.
  • Experimental features (which are currently hidden within a menu called Feature Flags) such as a redesigned About Phone page in settings, and automatic Bluetooth enabling while driving.
  • DNS over TLS.
  • A new optional gesture-based system interface, allowing users to navigate the OS using swipes more often than the traditional UI.
  • Redesigned multitask app switcher with the Google search bar and app drawer built-in.
  • Android Dashboard, which tells the user how much time they are spending on their device and in apps, and allows the user to set time limits on apps.
  • "Shush", an enhanced version of Do Not Disturb mode activated by placing the phone face down, which mutes standard notifications.
  • "Adaptive Battery" prediction, which makes use of Doze to hibernate user apps the OS determines the user will not use.
  • Auto-Brightness feature modifies screen brightness based on user habits.
  • Wind Down option lets Android users set a specific bedtime that enables Do Not Disturb and turns the entire phone's interface gray to discourage further use at night.
  • Vulkan 1.1 support.
  • Call recording options fully disabled
Android 8.1 Oreo (API level 27)
8.1 - December 5, 2017
  • Neural networks API.
  • Shared memory API.
  • WallpaperColors API.
  • Bluetooth battery level for connected devices, accessible in Quick Settings.
  • Android Oreo (Go edition), a lightweight distribution of Android that runs better than normal Android on devices with less than 1 GB of RAM.
  • Autofill framework updates.
  • Programmatic Safe Browsing actions.
  • Navigation buttons dim when not in use.
  • Visual changes to 'Power Off' and 'Restart', including a new screen and floating toolbar.
  • Toast messages are now white with the same existing transparency.
  • Automatic light and dark themes.
  • New Easter egg in the form of an official Oreo cookie picture.
Android 8.0 Oreo (API level 26)
8.0 - August 21, 2017
  • Project Treble, the biggest change to the foundations of Android to date: a modular architecture that makes it easier and faster for hardware makers to deliver Android updates.
  • Picture-in-picture support.
  • Support for Unicode 10.0 emoji (5.0) and replacement of all blob-shaped emojis by round ones with gradients and outlines.
  • Redesigned Quick Settings and Settings with a white background and respectively black and Accent font colors.
  • Restructured Settings by regrouping sections into similar entries.
  • Adaptive icons
  • Notification improvements.
    • Notification channels.
    • Notification dots (badges).
    • Notification snoozing.
    • Notification shade multi-colors (for music album art, messengers, etc.).
  • System-wide Autofill framework.
  • Support for AAC, Sony's LDAC and Qualcomm's aptX and aptX HD codecs.
  • App-specific unknown sources.
  • Multi-display support.
  • 2 times faster boot time compared to Nougat according to Google, testing on their Pixel devices.
  • Apps background execution and location limits.
  • Google Play Protect.
  • Downloadable fonts.
  • Integrated printing support.
  • Color management (deep color and wide color gamut).
  • Wi-Fi Assistant.
Android 7.1 Nougat (API level 25)
7.1 - October 4, 2016
  • Rearranged notification shade.
  • "Restart" option added to power button menu
  • Touch/display performance improvements.
  • Moves (Fingerprint swipe down gesture – opt-in).
  • Opt-in with new hardware required:
    • Seamless A/B system updates.
    • Daydream VR mode.
  • Developer features:
    • Shortcut manager APIs.
    • Circular app icons support.
    • Keyboard image insertion.
    • Fingerprint sensor gesture to open/close notification shade.
    • Manual storage manager Intent for apps.
    • Improved VR thread scheduling.
    • Enhanced wallpaper metadata.
    • Multi-endpoint call support.
    • Support for various MNO requirements.
      • PCDMA voice privacy property.
      • Source type support for Visual Voicemail.
      • Carrier config options for managing telephone videos.
  • Manual storage manager – identifies files and apps using storage.
7.1.1 - December 1, 2016
  • New set of emojis adding different skin tones and haircuts to existing ones.
  • Send GIFs directly from the default keyboard.
  • App shortcuts: Launch actions on apps by long-pressing the app icon.
  • Developer Options: Show CPU Usage feature removed.
7.1.2 - April 2, 2017
  • Battery usage alerts.
Android 7.0 Nougat (API level 24)
7.0 - August 22, 2016
  • Support for file-based encryption.
  • Unicode 9.0 emoji and skin tone modifier support (and exposes a subset of ICU4J APIs).
  • Ability to display color calibration.
  • Ability to zoom in the screen.
  • Ability to switch to the last opened app by double-tapping the overview button.
  • Added an Emergency information part.
  • Added the "Clear All" button to the Overview screen.
  • Another system partition, which gets updated when not in use, allowing for seamless system updates.
  • Daydream virtual reality platform (VR interface).
  • Improved Doze functionality, which aims to prolong battery life.
  • Improvements to the file browser.
  • Ability to move files added to Storage Access Framework
  • More Quick Settings options.
  • Multi-window support, which supports floating apps on a desktop layout.
  • New Data Saver mode, which can force apps to reduce bandwidth usage.
  • New JIT Compiler, making for 75 percent faster app installations and a 50 percent reduction in compiled code size.
  • Just in Time (JIT) compiler with code profiling to ART, which lets it constantly improve the performance of Android apps as they run.
  • Picture-in-picture support for Android TV.
  • Redesigned notification shade, featuring instant access to certain settings.
  • Redesigned Overview screen.
  • Replaced notification cards with notification sheets.
  • Settings app navigation drawer.
  • Vulkan 3D rendering API.
  • Multiple Device Locales
  • Discontinuation of Android Camera V1 API
  • Restricted file system access
Android 6.0 Marshmallow (API level 23)
6.0 - September 29, 2015
  • Precluded rudimentary file manager (package name:, accessible from storage settings.
  • Memory card mounted to /storage/????-????/ rather than /storage/extSdCard/, with a hexadecimal volume serial number in place of the wildcard question marks.
  • Contextual search from keywords within apps.
  • Introduction of Doze mode, which reduces CPU speed while the screen is off in order to save battery life.
  • App Standby feature.
  • Alphabetically accessible vertical application drawer.
  • Application search bar and favorites.
  • Native fingerprint reader support.
  • Direct Share feature for target-specific sharing between apps.
  • Renamed "Priority" mode to "Do Not Disturb" mode.
  • App Linking for faster instinctive opening of links with corresponding applications.
  • Larger Application folders with multiple pages.
  • Post-install/run-time permission requests.
  • USB-C support.
  • Demo Mode feature for screenshot-capture usage.
  • Automatic full data backup and restore for apps.
  • 4K display mode for apps.
  • Adoptable External storage to behave like Internal Storage.
  • MIDI support for musical instruments.
  • Experimental multi-window feature.
  • Support for actions by third-party apps in the text selection menu.
  • App permissions now granted individually at run-time, not all-or-nothing at install time. Similar to App Ops.
  • Miracast support dropped.
  • Many new essential commands supported by Android's Linux shell (/bin/sh).
  • No screen rotation during touch.
6.0.1 - December 7, 2015
  • Unicode 7.0 & 8.0 emoji support.
  • Descriptions for USB connection options.
  • Double-press the power button to open the camera.
Android 5.1 Lollipop (API level 22)
5.1 - March 2, 2015
  • Improvements and bug fixes to the Overview screen.
  • Ability to join Wi-Fi networks and control paired Bluetooth devices from quick settings.
  • Official support for multiple SIM cards.
  • Device protection: if a device is lost or stolen it will remain locked until the owner signs into their Google account, even if the device is reset to factory settings.
  • High-definition voice calls, available between compatible 4G LTE devices running Android 5.1.
  • Improvements to the notification priority system, to more closely replicate the silent mode that was removed from Android 5.0.
5.1.1 - April 20, 2015
  • Various bug fixes
  • Native Wi-Fi calling support.
Android 5.0 Lollipop (API level 21)
5.0 - November 4, 2014
  • Android Runtime (ART) with ahead-of-time (AOT) compilation and improved garbage collection (GC), replacing Dalvik that combines bytecode interpretation with trace-based 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, bringing a restyled user interface and "ripple effect" for buttons.
  • Refreshed lock screen, no longer supporting widgets.
  • 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. However, those must be adapted to the storage access framework of Android API level 21 or higher.
  • 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.
  • Smart lock feature.
  • SELinux in enforcing mode for all domains.
  • Updated emoji.
  • Improved accessibility support (e.g. switch access support).
  • Block-based over-the-air (OTA) updates for new devices.
  • Task listing access disabled for third-party applications.
5.0.1 - December 2, 2014
  • A few bug fixes, including resolving issues with video playback and password failures handling.
5.0.2 - December 19, 2014
  • Fixes a bug with TRIM support (introduced in Version 4.3), which prevented devices from running on-charger cleanups of file system allocations if the device was turned off at midnight, or if it was charged only when in use.
  • Changes how alarms wake the CPU, and how alarms compete for system resources.
Android 4.4W KitKat, with wearable extensions (API level 20)
4.4W - June 25, 2014
  • Initial release of the Android Wear platform for smartwatches: the same as Android 4.4 "KitKat", but with wearable extensions added.
4.4W.1 - September 6, 2014
  • UI updates for Google Maps navigation and alarms.
4.4W.2 - October 21, 2014
  • Offline music playback.
  • GPS support.
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.
  • Write access disabled for user-installed applications on external storage (i.e. MicroSD), except for their own directories inside Android/data.
  • Purging of app data directories in user storage (internal user storage and MicroSD) upon uninstallation
  • 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 are now based on the Chromium engine (feature parity with Chrome for Android 30).
  • Expanded functionality for notification listener services.
  • Public API for developing and managing text messaging clients.
  • 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).
  • New framework for UI transitions.
  • Sensor batching, step detector and counter APIs.
  • Settings application now makes it possible to select default text messaging and the 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.
  • Verified boot.
  • Enforcing SELinux.
  • 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.
  • Disables text wrapping in the WebView browser component.
4.4.1 - December 5, 2013
  • 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 the Dialer app's interface.
  • Updated the Chromium-based WebView to version 33 (screencasting to DevTools, HTML5 Canvas hardware acceleration performance improvements, vibration API, HTML5 form validation, and an 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 improved game graphics.
  • Restricted access mode for new user profiles.
  • Filesystem performance improvement by running the fstrim command while a device is idle.
  • Dial pad auto-complete in the Phone application.
  • Volume for incoming calls (ringtone) and notification alerts is no longer adjustable separately.
  • 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).
  • SELinux enabled by default.
  • 4K resolution support.
  • Numerous security updates, 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.
  • Changed digital rights management (DRM) APIs.
  • Right-to-left (RTL) languages now supported.
  • Clock in the status bar disappears if it is selected as a lockscreen widget.
  • Native emoji support.
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 (removed again in 2014) and the ability to swipe directly to the camera.
  • Notification power controls ("Quick Settings").
  • "Daydream" screensavers, showing information when idle or docked (later renamed to "screen saver" following the launch of the unrelated Google Daydream VR platform in 2016).
  • Multiple user accounts (tablets only).
  • Rewritten Bluetooth stack, switching from Bluez to Broadcom open source BlueDroid, allowing improved support for multiple displays and wireless display (Miracast).
  • Native right-to-left, always-on VPN and application verification. 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 a 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 support.
  • Premium SMS confirmation.
  • Group Messaging support.
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 HIDs (Human interface devices).
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 show 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.
    • CPU input boost.
    • Synchronizing touch to vsync timing.
  • Enhanced accessibility.
  • Bi-directional text and other language support.
  • User-installable keyboard maps.
  • Expandable notifications.
  • TLS v1.1 and v1.2 support added.
  • 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 9, 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.
  • One-finger gestures to expand/collapse notifications.
  • Bug fixes and performance enhancements.
Android 4.0.3 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 28, 2012
  • Stability improvements.
  • Better camera performance.
  • Smoother screen rotation.
  • Improved phone number recognition.
Android 4.0 Ice Cream Sandwich (API level 14)
4.0 - October 18, 2011
  • Major refinements to the "Holo" interface with the 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 the 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 the "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 a rooted Android device.
4.0.1 - October 19, 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 - September 30, 2011
  • Bug fixes and other minor improvements for the Motorola Xoom 4G.
3.2.4 - December 15, 2011
  • Pay As You Go for 3G and 4G tablets.
3.2.6 - February 15, 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 the 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 (removed again the following year with version 4.2).
  • New Easter egg, an image of a Tron-themed bumblebee.
  • Added System Bar, featuring quick access to notifications, status, and soft navigation buttons, available at the bottom of the screen.
  • Added the 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 the 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 somewhat 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).
  • Disallows applications from having to write access to secondary storage (memory cards on devices with internal primary storage) outside of designated, application-specific directories. Full access to primary internal storage is still allowed through a separate application-level permission.
Android 2.3.3 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.
  • Fixed a spontaneous reboot on Samsung Galaxy S Plus.
2.3.5 - July 25, 2011
  • Improved network performance for the Nexus S 4G, among other fixes and improvements.
  • Fixed a Bluetooth bug on Samsung Galaxy S.
  • Fixed a Wi-Fi crash on Samsung Galaxy S Plus.
  • Improved the Gmail application.
  • Shadow animations for list scrolling.
  • Camera software enhancements.
  • Improved battery efficiency.
2.3.6 - September 2, 2011
  • Fixed a voice search bug.
2.3.7 - September 21, 2011
  • Google Wallet support for the Nexus S 4G.
Android 2.3 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 telephones.
  • Faster, more intuitive text input on a virtual keyboard, with improved accuracy, better suggested text and voice input mode.
  • Enhanced copy/paste functionality, allowing users to select a word by press-holding, copying, and pasting.
  • 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).
  • First Android version to feature an Easter egg. It was an image of the Bugdroid standing next to a zombie gingerbread man, with many more zombies in the background.
2.3.1 - December 22, 2010
  • Improvements and bug fixes for the Nexus S.
2.3.2 - January 21, 2011
  • Improvements and bug fixes for the Nexus S.
Android 2.2 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 a 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 expandable memory.
  • Adobe Flash support.
  • Support for high-PPI displays (up to 320 ppi), such as four-inch 720p screens.
  • Gallery allows users to view picture stacks using a zoom gesture.
2.2.1 - September 27, 2010
  • Bug fixes, security updates and performance improvements.
2.2.2 - January 21, 2011
  • Minor bug fixes, including SMS routing issues that affected the Nexus One.
2.2.3 - November 21, 2011
  • Two security updates.
Android 2.1 Eclair (API level 7)
2.1 - January 11, 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 27, 2009
  • Expanded Account sync, allowing users to add multiple accounts to a device for synchronization of an email and contacts.
  • Microsoft Exchange email support, with a combined inbox to browse an 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 the added ability to delete the 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 a virtual keyboard, with a 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 the 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.
  • Pressure-sensitive touch support in API, even though no according hardware existed at that time.
  • 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 the 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 a 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 a 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 a 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.
  • Ability to check phone usage history.
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 by default when using the speakerphone, plus the ability to show/hide the 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, allowing application downloads 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.
  • 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 businesses 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.