The latest version is Android 11.0 released in September 2020. Most of the Android version has been named after either sweet or desserts. The following table represents the different versions, Android name, API level, and the year of release. Here API level is the integer value that identifies the API framework revision given by the version of the android platform.

Android 1.0 (API 1): There were NUMEROUS loopholes in this Android version including the necessity of physical keyboards or hardware buttons. Important features are:

• Browser, Google maps, and calendar.
• Camera and scroll down the notification bar.
• Wireless supports Wi-Fi and BlueTooth.
• Contacts, Gmail integration, and Google synchronization.

Android 1.1 (API 2): This version was released with API changes and resolved issues found in 1.0. Important features of this version are:

• Display details as well as reviews for locations.
• Gives DETAILED information by clicking on the business.
• Add save an attachment in the message.

Android 1.5 Cupcake (API 3): It brought the third-party app widgets that were the most distinguishing and valuable feature. Important features of this version are:

• Video recordings, copy and paste facility.
• Supports MPEG4 and 3GP formats.
• Search function and on-screen keyboard.
• Uploading images and videos.

Android 1.6 Donut (API 4): It had valuable changes including the ability to operate on various screen resolutions and SIZES. Donut provides the text and voice entry search including bookmark history and capacity to select multiple images for deletion. Important features of this version are:

• Camera quick toggling features and gallery.
• WVGA screen resolution speed.
• Power CONTROL widget for handling Wi-Fi, GPS, BlueTooth, etc.
• Technology support for CDMA/EVDO, VPNs, 802.1x, and a text-to-speech engine.
• Searching applications and speed improvements for cameras.
• Supports quick search Box.

Android 2.0-2.1 Eclair (API 5-API 7): It was released with multiple email account synchronizations and contacts. Many new features were added including flash support, color effect, scene mode, white balance, macro focus, and digital zoom. Android 2.1 version brought bug fixes and stability improvements. The most valuable feature introduced was real-time traffic information and voice-guided turn by turn navigation. Important features are:

• Updated UI.
• Minor API changes.
• Support Bluetooth 2.1.
• Improved Google map.
• Supports live and animated Wallpapers.
• Has the ability to add contact’s photo and select to call, message or email.

Android 2.2-2.2.3 Froyo (API 8): It was released with memory, speed, and performance improvements. It was introduced with the enhanced Bluetooth functionality and also compatibility with docks, portable Wi-Fi hotspot for 3G CONNECTION sharing. Features are:

• Upload file support in the browser.
• Supports alphanumeric and numeric passwords to enhance security.
• Support for animated GIF and multiple keyboard languages.
• Increased compatibility with headsets and car kits.

Android 2.3-2.3.7 Gingerbread (API 9-API 10): The main enhanced feature was the introduction of gaming API with improved graphical intense gaming. Features are:

• Updated UI.
• Support for VP8 and WebM video format.
• Improvement in copy and paste facility.
• Easier use of keyboard with faster and intuitive typing.
• Supports video calling and social networking.

Android 3.0-3.2.6 Honeycomb (API 11-API 13): It was a tablet-only release to launch the Motorola Xoom. It was suitable for those mobiles having a larger view than current smartphones. Features will include:

• Updated 3D UI and encrypted storage.
• Gmail, camera, contacts, and gallery improvements.
• Supports passwords with complex characters.
• Supports multiprocessors and recent applications for easy visual multitasking.
• Media sync from SD card.
• Talk video chat and google eBooks.
• Support adobe flashes in the browser.
• More sensor support.
• High-performance Wi-Fi connections.
• Action bar for application control and system bar for global status and notifications
• Chinese handwriting and redesigned keyboard.

Android 4.0-4.0.4 Ice Cream Sandwich (API 14-API 15): It is released with many enhanced features to enter the era of modern design. The snapshot was introduced to take screenshots by holding the power and volume button. Ice cream sandwich widgets are more robust and resizable compared to all older versions. Supported features are:

• Unlocking with face-fixing.
• Card-like appearance for app-switching.
• Better camera performance and improved video recording with high resolution.
• Spelling check feature, Wi-Fi direct.
• On-screen buttons and better camera performance.
• Ability to open up to 16 tabs in the web browser.

Android 4.1-4.3.1 Jelly Bean (API 16-API 18): It is released with Google digital assistant technology accessible from the home screen. The spectacular predictive intelligence utility gives expandable and interactive notifications. Users can enjoy multi-user support(Only for tablets). Supported features are:

• Power control, support USB audio.
• The improved camera app, security improvements.
• Voice search and typing, panorama.
• Expandable notifications, daydream as a screensaver.
• Google displays relevant content based on search history.
• Native emoji support, new gestures, and accessibility features
• 4k resolution support, supporting Bluetooth with low energy.
• Bi-directional text and different language support.
• Set or adjust the volume of incoming calls and show a message alert as well.

Android 4.4-4.4.4 KitKat (API 19-API 20): It is released with more focus on better user experience. Supported features are:

• GPS Support, smarter caller ID.
• Offline music support, screen recording.
• Contact prioritization.
• Cartoonish ideograms and emojis to the Google keyboard.
• UI updates for Google map navigations and alarm.
• ‘OK, Google’ feature allows access to Google to the users without touching your smartphones.

Android 5.0-5.1.1 Lollipop (API 21-API 22): It was released with a redesigned user interface and built with “material design”. It is having many amazing features including support for better notification management. Supported features are:

• Support ART, better and improved UI.
• Better device protection, built-in battery saver feature.
• Notification can be flicked away from the lock screen.
• The revamped navigation bar supports multiple SIM cards.
• The high definition of a voice call.

Android 6.0-6.0.1 Marshmallow (API 23): Google used “Macadamia Nut Cookie” to describe Android version 6.0 before the official announcement of Marshmallow. Supported features are:

• Support for fingerprint readers, type-C USB support.
• Multi-window experience, clear permission system.
• ’Sleep Mode’ for saving the life of the battery.
• Custom Google tabs and improved copy-pasting.

Android 7.0-7.1.2 Nougat (API 24-API 25): It was released with a native split-screen mode, data saver functionality, and a “bundled-by-app” system to organize notifications. Supported features are:

• Multitasking and split-screen mode.
• Storage manager enhancements, quick setting toggles.
• Display touch enhancements, better setting application.
• Inline reply to message and notification without opening an application.

Android 8.0-8.1 Oreo (API 26-API 27): It is having notification snoozing options, native picture-in-picture mode, and better control over how applications can alert you by notifications. Supported features are:

• Password autofill, auto-enable Wi-Fi.
• Downloadable fonts, multi-display support.
• Support picture-in-picture.
• Adaptive icons and smart text selection.
• Notification channels and snooze notifications.
• Google play support and new emoji styling.

Android 9.0 Pie (API 28): It is having plenty of amazing features according to the user interests and requirements. Supported features are:

• HDR, HD audio, multiple Bluetooth connections.
• Much more information about notification and easier text selection.
• Sound amplifier with select to speak option.
• Artificial Intelligence(AI) compatibility.
• Adaptive battery and brightness with the background restrictions.
• Supports for multi-camera with external camera compatibility.
• New shortcut key for screenshot and accessibility menu.
• Improved security features for protection.
• Android backups, privacy enhancements.
• Easier screen rotation, edge-to-edge screens support.
• Volume and sound enhancements, selectable dark mode.

Android 10.0 (API 29): It is released with enhanced features and functionalities with higher API levels. Supported features are:

• Support for foldable smartphones with a flexible display.
• Dark mode for the comfortability of eyes.
• Navigation control over gesture quicker and intuitive ever.
• Smart reply suggestions for all messaging applications.
• Live caption for media playing on a smartphone device.
• Undo removal of the app.
• Better notification control with many options.
• Sound amplifier with much more clear sound.

Android 11.0 (API 30): Android developers are continuously working to provide more advanced applications as per the user requirements. Important features included are:

• Native screen recording.
• Auto revokes app permission.
• Mute notifications during the video.
• Increase in touch sensitivity.
• Notification history.