This document provides an overview of the Android operating system. It discusses that Android is an open-source, Linux-based software platform built for mobile devices. The document then reviews Android's history from its founding in 2003 by Andy Rubin to its acquisition by Google in 2005. It also examines the Open Handset Alliance consortium and describes Android's multi-process architecture and key features. The rest of the document outlines the various versions of Android released since 2008 and their new features, as well as advantages and disadvantages of the Android platform.

2. I N T R O D U C T I O N

3. Contents :
 What is Android ?
 History
 Open Handset Alliance
 Architecture
 Features of Android
 Versions of Android phone
 Advantages & Disadvantages
 Conclusion
 Any queries ?

4. WHAT IS ANDROID?
 A Software platform and operating system for
mobile.
 Based on the Linux kernel.
 Android is a software stack for mobile devices
that includes an operating system middleware
and key applications.

5. H I S T O R Y
Android Inc was founded in Palo Alto, California
United States by Andy Rubin Rich Miner,Nick Sears &
Chris White in oct 2003.
In the year 2005 GOOGLE bought android for $50
million, Not much known at that time about android
inc.
At Google, the team led by RUBIN developed a
mobile device platform powered by LINUX KERNEL .
Google marketed the platform to handset makers &
carriers to provide a flexible, upgradable system.

6.  It’s consortium of several companies.
 This group of companies are allowed to use
source code of Android and develop
applications.
 Reason for Nokia not to develop Android
Mobiles is Nokia is not part of OHA till 2013.

7. ARCHITECTURE

8. Android is not a single piece of hardware.
Android supports wireless communication
using:-
 Android is a multi-process system, in
which each application (and parts of
the system) runs in its own process.
 3G Networks
 4G Networks
 802.11 Wi-Fi Networks
 Bluetooth Connectivity

9. FEATURES OF ANDROID
Interface that is better then the previous
touch screen mobiles.
User gets millions of applications that user
can not get in any other mobile operating
system.
 Android supports advanced audio/video/still
media formats such as MPEG-4, H.264, MP3,
and AAC, AMR, JPEG, PNG, GIF.
 Developing an android application is not
tough using SDK(standard development
kit) and java emulator we can easily
develop applications that we want.

10.  Other then Android there are several other
mobile operating system which is used.
 Symbian, iOS, windows this are one of the most
used mobile operating systems.

11. Sales
Android os
Windows phone
iOS
Symbian Os
Blackberry os
Others

12. FEATURE ANDROID iOS
Ease of use Yes no
Voice to text yes no
Gaming yes yes
Customizable yes no
Music Player no yes
Notification system yes no
Google voice yes no

13.  First Version of Android.
 The focus of Android beta is testing incorporating usability.
 Android beta will generally have many more problems on speed and
performance.
 First full version of android.
 Released on September 23, 2008.
 Wi-Fi and Bluetooth support.
 Quite slow in operating.
 copy and paste feature in the web browser is
not present.

14.  Released on April 30, 2009.
 Added auto-rotation option.
 Copy and Paste feature added in the web
browser.
 Increased speed and performance but not upto
required level.
 Released on September 15, 2009.
 Voice search and Search box were added.
 Faster OS boot times and fast web browsing
experience.
 Typing is quite slower.
 Released on October 26, 2009.
 Bluetooth 2.1 support.
 Improved typing speed on virtual
keyboard, with smarter dictionary.
 no Adobe flash media support.

15.  Released on May 20, 2010.
 Support for Adobe Flash 10.1
 Improved Application launcher with better browser
 No internet calling.
 Released on December 6, 2010.
 Updated User Interface with high efficiency and speed
 Internet calling
 One touch word selection and copy/paste.
 New keyboard for faster word input.
 More successful version of Android than previous
versions.
 not supports multi-core processors.
 Released on February 22, 2011.
 Support for multi-core processors
 Ability to encrypt all user data.
 This version of android is only available for
tablets.

16.  Released on November 14, 2011.
 Virtual button in the UI.
 A new typeface family for the UI, Roboto.
 Ability to shut down apps that are using data in the
background.
 Released on June 27, 2012.
 Smoother user interface.
 Widely used.
 Voice typing.

17.  Released on March 14, 2014.
 Latest version of Android.
 Better memory management.
 Improved Google now.
 Hangout apps.
 Smart caller ID.
 Immersive mode.
 Integration with cloud storage.
 Printing on the go.
 Built in sensors.
 System-wide closed captioning.
 Lock screen art.

18. ANDROID LOLIPOP 5.0 TO 5.1.1
 Released on June 25,2014
 Support for print previews
 Updated emoji.
 High definition voice calls , available between
compatible devices during android 5.1
 And many more…. Updated features.
 Released on may 28,2015
 Doze mode
 Native finger print reader
 Automatic full data backup & restore for
apps
 Adaptable external storage to behave like
internal storage
 4K display mode for apps
ANDROID MARSHMALLOW 6.0

19.  Easy access to thousands of applications via the
Google Android App Market
 Multitasking – Yups , Android phones can run many
applications, it means you can browse, Facebook
while listened to the song
DISADVANTAGES
 Continuous internet connection
 Advertising – Application in the Android phones
can indeed be obtained easily and for free, but the
consequences in each of these applications, will
always be ads on display, either the top or bottom
of the application

20.  Android is now stepping up in next level of
mobile internet.
 There are chances of Android Mobile sales
becomes more then iPhone in next two
years.
 Google may launch another version of
android that starts N because Google is
launching all the android versions in the
alphabetical order.
 There are chances of Android may become
the widely used operating system in world.

21. ANY QUERIES ?