Android Session 2 (continue)

In this session we will see how to check your mobile's android version.


STEP 1:

This is home screen of your mobile.
Here I have taken home screen of Galaxy Nexus.
(android 4.1 , Jellybean)

STEP 2:

Now click on the apps button as shown in above picture.

(you will find this at the bottom of your home screen.)

STEP 3: 

After clicking on apps button you will be directed to menu

which will look something like this.

 In the menu you have to search for the 'settings'.

Typical icon of settings is shown in the picture below

Now click on this settings icon to enter in Settings of your phone.
In the settings there are different options provided with the help of which you can change many things like brightness, volume, network connectivity and many more.

Another way to go to Settings is just roll down from top of your display.

a screen will appear somewhat like this.

The settings option is indicated by an arrow.
You can just click this icon to go to settings.

STEP 4: 

After going to settings you will have bunch of options in front of you. Such as Language & input, date & time etc.

Search for the 'About phone' option.

As shown in above picture just click on 'About phone' option.

STEP 5:

Now you can clearly see the android version is 4.1 which is jellybean.

Kindly refer to the post below to search the version depending on your version number.

Android Session 2

In this Session I will make you familiar with the versions of Android.
And then we will see how to check which version of android you are using.

First of all, there are two pre-commercial releases 

1. Alpha 

   Android 1.0 (API level 1)

   
   
   Lets see some features of this.
   
   I.Android Market application download and updates through the Market application.
   
   II.Camera support – however, this version lacked the option to change the camera's resolution,
       white balance, quality, etc.
   
   III.Access to web email servers, supporting POP3, IMAP4, and SMTP.
   
   IV. Gmail synchronization with the Gmail application.
   
   V.Google Contacts synchronization with the People application.
   
   VI.Google Calendar synchronization with the Calendar application.
   
   VII.Google Maps with Street View to view maps and satellite imagery, as well as find local business
          and obtain driving directions using GPS.
   
   VIII. Other applications include: Alarm Clock, Calculator, Dialer (Phone), Home screen (Launcher),            Pictures (Gallery), and Settings.
   
   IX. Wi-Fi and Bluetooth support.
   
   X.Instant messaging, text messaging, and MMS.
   
   

2. Beta

   Android 1.2(API level 2)

   Lets see some features of this

   
   

   I. Details and reviews available when a user searches for businesses on Maps.
   
   II. Longer in-call screen timeout default when using the speakerphone, plus ability to show/hide
   dialpad.
   
   III. Ability to save attachments in messages.
   
   IV. Support added for marquee in system layouts.
   
   

   
   

   
   

   NOW THE NEXT VERSIONS ARE

3. Cupcake

   Android 1.5(API level 3)
   

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

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

5. Eclair
   
   Android 2.0 (API level 5)
   
   I. Expanded Account sync, allowing users to add multiple accounts to a device for synchronization of email and contacts.
   
   II. Microsoft Exchange email support, with combined inbox to browse email from multiple accounts in
   one page.
   
   III. Bluetooth 2.1 support.
   
   IV. Ability to tap a Contacts photo and select to call, SMS, or email the person.
   
   V.Ability to search all saved SMS and MMS messages, with delete oldest messages in a conversation     automatically deleted when a defined limit is reached.
   
   VI. Numerous new camera features, including flash support, digital zoom, scene mode, white balance, color effect and macro focus.
   
   VII. Improved typing speed on virtual keyboard, with smarter dictionary that learns from word usage
   and includes contact names as suggestions.
   
   VIII. Refreshed browser UI with bookmark thumbnails, double-tap zoom and support for HTML5.
   
   IX. Calendar agenda view enhanced, showing attending status for each invitee, and ability to invite
   new guests to events.
   
   X. Optimized hardware speed and revamped UI.
   
   XI. Support for more screen sizes and resolutions, with better contrast ratio.
   
   XII. Improved Google Maps 3.1.2.
   
   XIII. MotionEvent class enhanced to track multi-touch events.
   
   XIV. Addition of live wallpapers, allowing the animation of home-screen background images to show          movement.
   
   Android 2.0.1 (API level 6)
   
   I. Minor API changes, bug fixes and framework behavioral changes.
   
   Android 2.1 (API level 7)
   I. Minor amendments to the API and bug fixes.
   
   
   
6. Froyo (Short for Frozen Yogurt)
   
   Android 2.2- Android 2.2.3 (API level 8)
   
   I. Speed, memory, and performance optimizations.
   
   II. Additional application speed improvements, implemented through JIT compilation.
   
   III. Integration of Chrome's V8 JavaScript engine into the Browser application.
   
   IV. Support for the Android Cloud to Device Messaging (C2DM) service, enabling push notifications.
   
   V.Improved Microsoft Exchange support, including security policies, auto-discovery, GAL look-up, calendar synchronization and remote wipe.
   
   VI. Improved application launcher with shortcuts to Phone and Browser applications.
   
   VII. USB tethering and Wi-Fi hotspot functionality.
   
   VIII. Option to disable data access over mobile network.
   
   IX. Updated Market application with batch and automatic update features.
   
   X. Quick switching between multiple keyboard languages and their dictionaries.
   
   XI. Support for Bluetooth-enabled car and desk docks.
   
   XII. Support for numeric and alphanumeric passwords.
   
   XIII. Support for file upload fields in the Browser application.
   
   XIV. The browser now shows all frames of animated GIFs instead of just the first frame only.
   
   XV. Support for installing applications to the expandable memory
   
   XVI. Adobe Flash support.
   
   XVII. Support for high-PPI displays (up to 320 ppi), such as 4" 720p screens.
   
   XVIII. Gallery allows users to view picture stacks using a zoom gesture.
   
   Android 2.2.1
   I. Bug fixes, security updates and performance improvements.
   
   Android 2.2.2
   
   I. Minor bug fixes, including SMS routing issues that affected the Nexus One.
   
   Android 2.2.3
   I. Two security patches.
   
7. Gingerbread 
   Android 2.3 - Android 2.3.2 (API level 9)
   
   Android 2.3
   I. Updated user interface design with increased simplicity and speed.
   
   II. Support for extra-large screen sizes and resolutions (WXGA and higher)
   
   III. Native support for SIP VoIP internet telephony.
   
   IV. Faster, more intuitive text input in virtual keyboard, with improved accuracy, better suggested text and voice input mode.
   
   V. Enhanced copy/paste functionality, allowing users to select a word by press-hold, copy, and paste.
   
   VI. Support for Near Field Communication (NFC), allowing the user to read an NFC tag embedded in a poster, sticker, or advertisement.
   
   VII. New audio effects such as reverb, equalization, headphone virtualization, and bass boost.
   
   VIII. New Download Manager, giving users easy access to any file downloaded from the browser, email, or another application.
   
   IX. Support for multiple cameras on the device, including a front-facing camera, if available.
   
   X. Support for WebM/VP8 video playback, and AAC audio encoding.
   
   XI. Improved power management with a more active role in managing applications that are keeping the device awake for too long.
   
   XII. Enhanced support for native code development.
   
   XIII. Switched from YAFFS to ext4 on newer devices.
   
   XIV. Audio, graphical, and input enhancements for game developers.
   
   XV. Concurrent garbage collection for increased performance.
   
   XVI. Native support for more sensors (such as gyroscopes and barometers)
   
   
   
   Android 2.3.1 & Android 2.3.2
   
   I. Improvements and bug fixes for the Google Nexus S.
   
   
8. Gingerbread
   Android 2.3.3 - Android 2.3.7 (API level 10)
   
   Android 2.3.3
   
   I. Several improvements and API fixes.
   
   
   Android 2.3.4
   
   I. Support for voice or video chat using Google Talk.
   
   II. 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.
   
   III. Switched the default encryption for SSL from AES256-SHA to RC4-MD5.
   
   Android 2.3.5
   
   I. Improved network performance for the Nexus S 4G, among other fixes and improvements.
   
   II. ixed Bluetooth bug on Samsung Galaxy S.
   
   III. Improved Gmail application.
   
   IV. Shadow animations for list scrolling.
   
   V. Camera software enhancements.
   
   VI. Improved battery efficiency.
   
   Android 2.3.6
   
   I. Fixed a voice search bug.
   
   II. (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.)
   
   Android 2.3.7
   
   I. Google Wallet support for the Nexus S 4G.
   
   
9. Honeycomb
   
   Android 3.0 (API level 11)
   
   I. Optimized tablet support with a new “holographic” user interface.
   
   II. Added System Bar, featuring quick access to notifications, status, and soft navigation buttons, available at the bottom of the screen.
   
   III. Added Action Bar, giving access to contextual options, navigation, widgets, or other types of content at the top of the screen.
   
   IV. 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.
   
   V. Redesigned keyboard, making typing fast, efficient and accurate on larger screen sizes.
   
   VI. Simplified, more intuitive copy/paste interface.
   
   VII. Multiple browser tabs replacing browser windows, plus form auto-fill and a new “incognito” mode allowing anonymous browsing.
   
   VIII. Quick access to camera exposure, focus, flash, zoom, front-facing camera, time-lapse, and other camera features.
   
   IX. Ability to view albums and other collections in full-screen mode in Gallery, with easy access to thumbnails for other photos.
   
   X. New two-pane Contacts UI and Fast Scroll to let users easily organize and locate contacts.
   
   XI. New two-pane Email UI to make viewing and organizing messages more efficient, allowing users to select one or more messages.
   
   XII. Hardware acceleration.
   
   XIII. Support for multi-core processors.
   
   XIV. Ability to encrypt all user data.
   
   XV. HTTPS stack improved with Server Name Indication (SNI)
   
   XVI. Filesystem in Userspace (FUSE; kernel module)
   
   XVII. 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.
   
   
10. Honeycomb
    
    Android 3.1 (API level 12)
    
    I. UI refinements.
    
    II. Connectivity for USB accessories (USB On-The-Go).
    
    III. Expanded Recent Applications list.
    
    IV. Resizable Home screen widgets.
    
    V. Support for external keyboards and pointing devices.
    
    VI. Support for joysticks and gamepads.
    
    VII. Support for FLAC audio playback.
    
    VIII. High-performance Wi-Fi lock, maintaining high-performance Wi-Fi connections when device screen is off.
    
    IX. Support for HTTP proxy for each connected Wi-Fi access point.
    
    
11. Honeycomb
    
    Android 3.2(3.2-3.2.6) (API level 13)
    
    I. Improved hardware support, including optimizations for a wider range of tablets.
    
    II. Increased ability of applications to access files on the SD card, e.g. for synchronization.
    
    III. Compatibility display mode for applications that have not been optimized for tablet screen resolutions.
    
    IV. New display support functions, giving developers more control over display appearance on different Android devices.
    
    V. Bug fixes and minor security, stability and Wi-Fi improvements.
    
    VI. Update to Android Market with automatic updates and easier-to-read Terms and Conditions text
    
    VII. Update to Google Books.
    
    VIII. Improved Adobe Flash support in browser.
    
    IX. Improved Chinese handwriting prediction.
    
    X. Bugfixes and other minor improvements for the Motorola Xoom 4G.
    
    XI. Bugfixes and other minor improvements for the Motorola Xoom and Motorola Xoom 4G.
    
    XII. Pay as You Go" support for 3G and 4G tablets.
    
    XIII. Bugfixes and other minor improvements for the Motorola Xoom and Motorola Xoom 4G
    
    XIV. Fixed data connectivity issues when coming out of airplane mode on the US 4G Motorola Xoom
    
    
12. Ice Cream Sandwich
    Android 4.0 - Android 4.0.2 (API level 14)
    I. Major refinements to the "Holo" interface with new Roboto font family.
    
    II. Soft buttons from Android 3.x are now available for use on phones.
    
    III. Separation of widgets in a new tab, listed in a similar manner to applications
    
    IV. Easier-to-create folders, with a drag-and-drop style
    
    V. Improved visual voicemail with the ability to speed up or slow down voicemail messages
    
    VI. Pinch-to-zoom functionality in the calendar
    
    VII. Integrated screenshot capture (accomplished by holding down the Power and Volume-Down buttons)
    
    VIII. Improved error correction on the keyboard
    
    IX. Ability to access applications directly from lock screen
    
    X. Improved copy and paste functionality
    
    XI. Better voice integration and continuous, real-time speech to text dictation
    
    XII. Face Unlock, a feature that allows users to unlock handsets using facial recognition software
    
    XIII. Automatic syncing of browser with users' Chrome bookmarks
    
    XIV. 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
    
    XV. Ability to shut down applications from the recent apps list with a swipe.
    
    XVI. Improved camera application with zero shutter lag, time lapse settings, panorama mode, and the ability to zoom while recording.
    
    XVII. Built-in photo editor.
    
    XVIII. New gallery layout, organized by location and person.
    
    XIX. Refreshed "People" application with social network integration, status updates and hi-res images.
    
    XX. Android Beam, a near-field communication feature allowing the rapid short-range exchange of web bookmarks, contact info, directions, YouTube videos and other data.
    
    XXI. Support for the WebP image format.
    
    XXII. Hardware acceleration of the UI.
    
    XXIII. Wi-Fi Direct.
    
    XXIV. 1080p video recording for stock Android devices.
    
    XXV. Android VPN Framework (AVF), and TUN (but not TAP) kernel module. Prior to 4.0, VPN software required rooted Android.
    
    Android 4.0.1
    
    I.Fixed minor bugs for the Samsung Galaxy Nexus.
    
    Android 4.0.2
    
    I.Fixed minor bugs on the Verizon Galaxy Nexus, the US launch of which was later delayed until December 2011.
    
    
13. Ice Cream Sandwich
    Android 4.0.3 - Android 4.0.4 (API level 15) 
    
    Android 4.0.3
    
    I. Numerous bugfixes and optimizations.
    
    II. Improvements to graphics, databases, spell-checking and Bluetooth functionality.
    
    III. New APIs for developers, including a social stream API in the Contacts provider.
    
    IV. Calendar provider enhancements.
    
    V. New camera applications enhancing video stabilization and QVGA resolution.
    
    VI. Accessibility refinements such as improved content access for screen readers.
    
    
    
    Android 4.0.4
    
    I. Stability improvements.
    
    II. Better camera performance.
    
    III. Smoother screen rotation.
    
    IV. Improved phone number recognition.
    
    
14. Jelly Bean
    
    Android 4.1(4.1-4.1.2) (API level 16)
    
    I. 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.
    
    II. Enhanced accessibility.
    
    III. Bi-directional text and other language support
    
    IV. User-installable keyboard maps.
    
    V. Expandable notifications.
    
    VI. Ability to turn off notifications on an application-specific basis.
    
    VII. Shortcuts and widgets can automatically be re-arranged or re-sized to allow new items to fit on home screens.
    
    VIII. Bluetooth data transfer for Android Beam.
    
    IX. Tablets with smaller screens now use an expanded version of the interface layout and home screen used by phones.
    
    X. Improved camera application.
    
    XI. Multi-channel audio.
    
    XII. The Fraunhofer FDK AAC codec becomes standard in Android, adding AAC 5.1 channel encoding/decoding.
    
    XIII. USB audio (for external sound DACs)
    
    XIV. Audio chaining (also known as gapless playback)
    
    XV. Ability for other launchers to add widgets from the application drawer without requiring root access.
    
    XVI. Fixed a bug on the Nexus 7 regarding the inability to change screen orientation in any application.
    
    XVII. Lock/home screen rotation support for the Nexus 7.
    
    XVIII. One-finger gestures to expand/collapse notifications.
    
    XIX. Bug fixes and performance enhancements.
    
    
15. Jelly Bean
    
    Android 4.2(4.2-4.2.2) (API level 17)
    I.Lock screen improvements, including widget support and the ability to swipe directly to camera.
    
    II. Notification power controls ("Quick Settings")
    
    III. "Daydream" screensavers, showing information when idle or docked
    
    IV. Multiple user accounts (tablets only)
    
    V. Rewritten Bluetooth stack, switching from Bluez to Broadcom open source BlueDroid,allowing improved support for multiple displays and wireless display (Miracast)
    
    VI. Native right-to-left, always-on VPN and application verification.A new NFC stack was added at the same time.
    
    VII. Accessibility improvements: triple-tap to magnify the entire screen, pan and zoom with two fingers. Speech output and Gesture Mode navigation for blind users
    
    VIII. New clock application with built-in world clock, stop watch and timer
    
    IX. 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
    
    X. 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.
    
    XI. Fixed a bug in the People application where December was not displayed on the date selector when adding an event to a contact.
    
    XII. Added Bluetooth game pads and joysticks as supported HID (Human interface device)
    
    XIII. Fixed Bluetooth audio streaming bugs
    
    XIV. Long-pressing the Wi-Fi and Bluetooth icons in Quick Settings now toggles the on/off state
    
    XV. New download notifications, which now shows the percentage and estimated time remaining for active application downloads
    
    XVI. New sounds for wireless charging and low battery
    
    XVII. New Gallery application animation allows faster loading
    
    XVIII. USB debug whitelist
    
    XIX. Bug fixes and performance enhancements
    
    
    
16. Jelly Bean
    
    Android 4.3(4.3-4.3.1) (API level 18)
    
    I. Bluetooth low energy support.
    
    II. Bluetooth Audio/Video Remote Control Profile (AVRCP) 1.3 support
    
    III. OpenGL ES 3.0 support, allowing for improved game graphics.
    
    IV. Restricted access mode for new user profiles.
    
    V. Filesystem write performance improvement by running fstrim command while device is idle
    
    VI. Dial pad auto-complete in the Phone application
    
    VII.  Volume for incoming calls (ringtone) and notification alerts is no longer adjustable separately
    
    VIII. Improvements to Photo Sphere
    
    IX. Reworked camera UI, previously introduced on Google Play edition phones
    
    X. Addition of "App Ops", a fine-grained application permissions control system (hidden by default)
    
    XI. 4K resolution support
    
    XII. Many security enhancements, performance enhancements, and bugfixes
    
    XIII. System-level support for geofencing and Wi-Fi scanning APIs
    
    XIV. Background Wi-Fi location still runs even when Wi-Fi is turned off
    
    XV. Developer logging and analyzing enhancements
    
    XVI. Added support for five more languages
    
    XVII. Improved digital rights management (DRM) APIs
    
    XVIII. Right-to-left (RTL) languages now supported
    
    XIX. Clock in the status bar disappears if clock is selected as lock screen widget
    
    XX. Bugfixes and small tweaks for the Nexus 7 LTE.
    
    
    
17. Kitkat
    
    Android 4.4(4.4-4.4.4)(API level 19)
    
    I. Refreshed interface with white elements instead of blue
    
    II. 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.
    
    III. Ability for applications to trigger translucency in the navigation and status bars
    
    IV. Ability for applications to use "immersive mode" to keep the navigation and status bars hidden while maintaining user interaction
    
    V. Action overflow menu buttons are always visible, even on devices with a "Menu" key, which was officially deprecated by Android 4.0.
    
    VI. Restriction for applications when accessing external storage, except for their own directories
    
    VII. Optimizations for performance on devices with lower specifications, including zRAM support and "low RAM" device API
    
    VIII. Wireless printing capability
    
    IX. NFC host card emulation, enabling a device to replace smart cards
    
    X. WebViews now based on Chromium engine (feature parity with Chrome for Android 30)
    
    XI. Expanded functionality for notification listener services
    
    XII. Public API for developing and managing text messaging clients
    
    XIII. 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).
    
    XIV. New framework for UI transitions
    
    XV. Sensor batching, step detector and counter APIs
    
    XVI. Settings application now makes it possible to select default text messaging and home (launcher) application
    
    XVII. Audio tunneling, audio monitoring and loudness enhancer
    
    XVIII. Built-in screen recording feature (primarily for developers, as usage of ADB is required)
    
    XIX. Native infrared blaster API
    
    XX. Expanded accessibility APIs and system-level closed captioning settings
    
    XXI. Android Runtime (ART) introduced as a new experimental application runtime environment, not enabled by default, as a replacement for the Dalvik virtual machine
    
    XXII. Bluetooth Message Access Profile (MAP) support
    
    XXIII. Disabled access to battery statistics by third-party applications
    
    XXIV. Settings application no longer uses a multi-pane layout on devices with larger screens
    
    XXV. Wi-Fi and mobile data activity (TX/RX) indicators are moved to quick settings
    
    XXVI. Browser text wrap is disabled.
    
    XXVII. Improvements to auto focus, white balance and HDR+ for the Nexus 5 camera
    
    XXVIII. Better application compatibility for the experimental Android Runtime (ART)
    
    XXIX. Camera application now loads Google+ Photos instead of Gallery when swiping away from the camera view
    
    XXX. Miscellaneous improvements and bug fixes
    
    XXXI. Further security enhancements and bug fixes
    
    XXXII. Removal of the "App Ops" application permissions control system, introduced in Android 4.3
    
    XXXIII. Refreshed Dialer app interface
    
    XXXIV. Updated the Chromium based WebView to version 33 (screencasting to DevTools, HTML5 Canvas hardware acceleration performance improvements, vibration API, HTML5 form validation, HTML5 datalist)
    
    XXXV. CVE-2014-0224 fixed, eliminating an OpenSSL man-in-the-middle vulnerability
    
    
18. Kitkat with wearable extension
    
    Android 4.4 (4.4w-4.4w.2)(API level 20)
    I. Initial release of Android Wear platform for smartwatches: the same as Android 4.4 "KitKat", but with wearable extensions added.
    
    II. UI updates for Google Maps navigation and alarms.
    
    III. Offline music playback
    
    IV. GPS support
    
    
    
19. Lollipop
    
    Android 5.0-Android 5.0.2 (API level 21)
    
    Android 5.0
    I. Android Runtime (ART) with ahead-of-time (AOT) compilation and improved garbage collection (GC), replacing Dalvik that uses just-in-time (JIT) compilation
    
    II. Support for 64-bit CPUs
    
    III. OpenGL ES 3.1 and Android Extension Pack (AEP) on supported GPU configurations
    
    IV. Recent activities screen with tasks instead of applications, up to a configured maximum of tasks per application
    
    V. Vector drawables, which scale without losing definition
    
    VI. Support for print previews
    
    VII. Material design, bringing a restyled user interface
    
    VIII. Refreshed lock screen, no longer supporting widgets
    
    IX. Refreshed notification tray and quick settings pull-down
    
    X. Project Volta, for battery life improvements
    
    XI. Searches can be performed within the system settings for quicker access to particular settings
    
    XII. Lock screen provides shortcuts to application and notification settings
    
    XIII. Guest logins and multiple user accounts are available on more devices, such as phones.
    
    XIV. Audio input and output through USB devices
    
    XV. Third-party applications regain the ability to read and modify data located anywhere on external storage, such as on SD cards.
    
    XVI. Pinning of an application's screen for restricted user activity.
    
    XVII. Recently used applications are remembered even after restarting the device.
    
    XVIII. WebViews receive updates independently through Google Play for security reasons, instead of relying on system-wide vendor updates
    
    XIX. Addition of 15 new languages: Basque, Bengali, Burmese, Chinese (Hong Kong), Galician, Icelandic, Kannada, Kyrgyz, Macedonian, Malayalam, Marathi, Nepali, Sinhala, Tamil and Telugu
    
    XX. 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.
    
    XXI. A flashlight-style application is included, working on supported devices with a camera flash.
    
    XXII. User-customizable priorities for application notifications.
    
    Android 5.0.1
    
    I. A few bugfixes, including resolving issues with video playback and password failures handling
    
    Android 5.0.2
    
    I. 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.
    
    II. Changes how alarms wake the CPU, and how alarms compete for system resources.

Android (Operating System)

Android is a mobile operating system (OS) based on the Linux kernel and currently developed by Google. With a user interface based on direct manipulation, Android is designed primarily for touchscreen mobile devices such as smartphones and tablet computers, with specialized user interfaces for televisions (Android TV), cars (Android Auto), and wrist watches (Android Wear). The OS uses touch inputs that loosely correspond to real-world actions, like swiping, tapping, pinching, and reverse pinching to manipulate on-screen objects, and a virtual keyboard. Despite being primarily designed for touchscreen input, it also has been used in game consoles, digital cameras, regular PCs (e.g. the HP Slate 21) and other electronics.

Lets see a home screen Picture of a typical android phone

Lets see some facts about ANDROID

1. First Release:                    September 23,2008
2. Source Model:                   Open Source (always free of cost)
3. Developer:                          Google
4. Written in:                           C(core), C++ and JAVA
5. Package Manager:           Google-play, APK
6. Kernel Type:                      Monolithic modified Linux kernel
7. OS Family:                         Unix like
8. Available in:                      46 languages
9. Platforms:                         ARM,MIS and x86
10. Official Website:              www.android.com