This document discusses Android 4.1 Jellybean OS. It provides an introduction to Android and Jellybean, outlines key features of Jellybean like improved notifications, accessibility features for blind users, and face unlock. The pros are listed as silky-smooth performance, improved notifications, and Chrome as the default browser. The cons are limited Google Now capabilities, availability on few devices, and lack of built-in security for lost devices. In conclusion, Jellybean is not significantly different than the previous version but aims to be the best Android system to compete with other mobile operating systems.

1. Android 4.1:Jellybean os

2. CONTENT’S
• Abstract
• Introduction
• What is Android?
• About Jellybean OS
• JELLYBEAN features
• JELLYBEAN Pros & Cons
• Conclusion

3. Abstract
• Android is linux based mobile OS which is
being used by popular smart phone brands
like Samsung, LG, HTC, Sony Xperia, and many
other. Jellybean OS is 4.1 version of this
android which was released on july,9 2012.
This paper will contain detailed study of
Android 4.1: Jellybean OS. Pros and cons of
jellybean.

4. I. INTRODUCTION
• Android is a linux based OS. 4.1 version of
Android is popularly known as Jellybean OS.
It is claimed to be the best android OS by
google and other intellectual groups who are
working in smart phone companies like
google (Nexus), Samsung(Galaxy series), sony
(Xperia), HTC(One, Wildfire and many more).

5. • In recent years, the emergence of smart phones
has changed the definition of mobile phones.
Phone is no longer just a communication tool, but
also an essential part of
• Now the Android system in the electronics
market is becoming more and more popular,
especially in the smartphone market. Because of
the open source, some of the development tools
are free, so there are plenty of applications
generated in the people's communication and
daily life.

6. 2. ANDROID
• Android is a Linux-based operating system
designed especially for Smartphone and
tablets, developed by Google combining with
other Open Hands
• Initially Android was developed by Android
Inc which was later purchased by Google in
2005 and brought up with a project called
Android Open Source Project.

7. • Android being an open source has large communities
of developers writing applications developed
primarily in java. Now apps are also developed in
other languages such as C, C++, python, java script,
flash etc. They are available to download from Google
play or other third party sites et Alliance (OHA).
• In September 2012 there are more than 675,000
apps and games available on Google Play to
keep users entertained, alongside millions of
songs and books, and thousands of movies. Also
the estimated number of downloads from
Google play was 25 billion.

8. 3.JELLYBEAN OS
• Jellybean OS is android 4.1 version. This
version of OS is successor of Android of
android 4.0: ice-cream sandwich. There is not
much different between ICS and jellybean.
• There is highest degree of advancement in
notification displays, probably the best
among the entire smart phone OS.

9. • Google also have advanced its graphical
interface with much clarity using V-sync and
Triple Buffer. Google have also made android
to compete Apple’s Siri which was introduced
in apple 4s by introducing advance google
now application.
• users won’t feel much change from ICS in
speed and browsing capability and camera
except jellybean have filmstrip show while
taking photos.

10. 4.JELLYBEAN FEATURES
1. Accessibility :-
• In Jellybean, now blind users can use 'Gesture
Mode' to reliably navigate the UI using touch
and swipe gestures in combination with
speech output.

11. 2. Face Unlock :-
• Now in Jellybean, The Face unlock have been
updated and is now faster and more accurate.
Users can improve face matching accuracy by
calibrating their face in different accessories
• Face unlock requires just a blink of time to verify
that the user is unlocking the device accurately

12. 3. Google Play:-
• From Google Play we can switch directly to
TV show apps , we can add bookmarks to
remember important information,and we
also can hear songs from Google play by
using a queue of track, by album etc

13. 5.JELLYBEAN PROS & CONS:
pros
• Silky-smooth performance
• Improved notifications
• Chrome as default browser
• Resizable widgets
cons
• Google Now is limited
• Available on few devices
• Few tablet-friendly apps
• No built-in lost device security

14. 6.CONCLUSION:
• It is not much different than android 4.0: Ice-
cream sandwich.
• Google have shown this os as the best
capability of an android system.
• It is more advanced to compete with other os
like IOS and Windows Phone.