Android

Android 1.1

• 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 1.5 Cupcake

• Support for third-party virtual keyboards with text prediction and user dictionary for custom words
• Support for – miniature application views that can be embedded in other applications (such as the Home screen) and receive periodic updates
• Video recording and playback in  and 3GP formats
• Auto-pairing and stereo support for Bluetooth added (A2DP and AVRCP profiles)
• Copy and paste features added to 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
• Added auto-rotation option
• Added the current stock boot animation

Android 1.6 Donut

• 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 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  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 2.0/2.1 Eclair

• Expanded Account sync, allowing users to add multiple accounts to a device for email- and contact-synchronization
• 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 4.0.x Ice Cream Sandwich

• 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 apps
• Easier-to-create folders, with a drag-and-drop style
• A customizable launcher
• 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 apps 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
• New tabbed web browser under Google's Chrome brand, allowing up to 16 tabs
• Automatic syncing of browser with users' Chrome bookmarks
• A new typeface family for the UI, Roboto
• 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 apps that are using data in the background
• Improved camera app 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" app 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^[52]
• Hardware acceleration of the UI^[63]
• Wi-Fi Direct^[64]
• 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. 

Android 4.1/4.2 Jelly Bean

• 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 app 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
• Offline voice dictation
• Tablets with smaller screens now use an expanded version of the interface layout and home screen used by phones.
• Improved voice search
• Improved camera app
• Google Wallet (for the Nexus 7)
• High-resolution Google+ contact photos^[77]
• Google Now search application
• Multichannel audio
• USB audio (for external sound DACs)^[78]
• Audio chaining (also known as gapless playback)
• Stock Android browser is replaced with the Android mobile version of Google Chrome in devices with Android 4.1 preinstalled^[81]
• Ability for other launchers to add widgets from the app drawer without requiring root access