• Mobile OS
• Android History
• Android Versions
• Merits and Demerits
Conclusion and future
Android is a software
stack for mobile
devices that includes
and key applications.
A mobile operating system (OS) is a software that
allows smart phones, tablet PCs and other devices to run
applications and programs.
• Symbian OS
• BlackBerry OS
• Apple’s iOS
• Windows Phone OS
• Android OS
Mobile Operating System
Android is an open mobile phone platform that was
developed by Google and, later, by the Open Handset
Alliance. Google defines Android as a "software stack" for
So, what's a software stack? It's made up of the operating
system (the platform on which everything runs), the
middleware (the programming that allows applications to
talk to a network and to one another), and the
applications (the actual programs that the phones will
run). In short, the Android software stack is all the
software that will make an Android phone.
The Android™ was built upon the open Linux kernel, and
developed by Android, Inc., which is owned by Google.
Open Handset Alliance - to develop open standards for
First Version of Android.
The focus of Android beta is testing incorporating usability.
Android beta generally have many more problems on speed
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.
Released on April 30, 2009.
Added auto-rotation option.
Copy and Paste feature added in the web
Increased speed and performance but not
upto required level.
Released on September 15, 2009.
Voice search and Search box were
Faster OS boot times and fast web
Typing is quite slower.
Released on October
Bluetooth 2.1 support.
Improved typing speed on
virtual keyboard, with
No Adobe flash media
Released on May 20, 2010.
Support for Adobe Flash 10.1
Improved Application launcher with better
No internet calling.
Released on December 6, 2010.
Updated User Interface with
high efficiency and speed
One touch word selection and copy/paste.
New keyboard for faster word input.
More successful version of Android than
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.
Released on November 14, 2011.
Virtual button in the UI.
A new typeface family for the
Ability to shut down apps that are
using data in the background.
Released on June 27, 2012
. High performance graphics powered
by OpenGL ES 3.0.
Android 4.1 Jelly Bean improves on
the speed and simplicity
Released on 31 October 2013
Latest version of Android.
Smoother user interface.
Android provides a set of core applications:
All applications are written using the Java language.
Enabling and simplifying the reuse of components
Developers have full access to the same framework
APIs used by the core applications.
Users are allowed to replace components.
Each application can publish its capabilities which
other apps can use
Including a set of C/C++ libraries used by
components of the Android system
Exposed to developers through the Android
Providing most of the functionality available in the core
libraries of the Java language
CPU typically runs 500-600 Mhz
RAM available to an App may only be a
Disk (flash) access is very slow
may be in portrait or landscape
very high DPI - small text may not be
touch resolution is very low (~25 pixel)
Network access may be slow and
Services can run in the background
Notifications let you know of background events
Easy access to thousands of applications via the
Google Android App Market
Continuous Internet connection
• Android operating system uses more
amount of battery as compared to
normal mobile phones.
• As there are so many user sometimes it
becomes difficult to connect all the
• As we call Android is world of
applications we continuously need to
connected with the internet which is not
possible for all the users.
• Android is now stepping up in next
level of mobile internet.
• Android Mobile sales have becomes
more then iPhone in two years.
• Google may launch another version
of android that starts L because
Google is launching all the android
versions in the alphabetical order.
• Android have become the widely
used operating system in world.