What are advantages of Jelly Bean compared to Ice Cream Sandwich version of Android?
1) Multichannel audio over HDMI
2) Media codec access at the platform hardware and software level
3) Audio record triggering
4) Audio preprocessing
5) Audio chaining
6) USB audio device support
Dr Sunil, although you can install Android 4.2 and use it on a device with 512 MB RAM (such as Samsung Galaxy S - i9000, my current phone), you will not be so pleased if you're going to use some popular apps like Facebook, Google Maps, Google+ etc. Unfortunately these apps always want to be active on the background, taking precious RAM, so your limited-memory-device will start to lag, a lot of... That's the reason I have uninstalled most of them and use only from a browser. The only way is upgrading/buying a new phone with at least 1 GB of RAM. Only then you might be satisfied with the performance of your Android, be it 4.1 or 4.2.
For detailed information about Ice-cream sandwich visit http://www.android.com/about/ice-cream-sandwich/
and for jellybean version visit http://www.android.com/about/jelly-bean/
personally I feel that Jellybean is more smooth and fast.
does it use lesser batery than ics
Yes it improves battery life
"Jelly Bean has more reactive and uniform touch responses, and makes your Android device even more responsive by boosting your device’s CPU instantly when you touch the screen, and turns it down when you don’t need it to improve battery life."
Google play also allows you to save battery while updating applications:
"Smart App Updates ensure that only the parts of an application that have changed will be downloaded when you next update it, saving time, bandwidth, and battery."
There are many. The most important are:
-Active notification bar
Jelly Bean is able to use "Butter project", a project from Google that beats lag. As they said " they declared war to lag with the Butter Project". Samsung phones take advantage of this feature.
How much minimum Random memory is pre-requisite for Jelly bean
much faster and has great features like double notifications, butter, expandable widgets, etc.
How much minimum Random memory is pre-requisite for Jelly bean compared to Icecream Sandwich
some games/application require Jelly Bean
What is main difference between 4.1.1 and 4.2 , both jelly bean?
Android 4.2 is not a revolution it just bring new applications, Android 4.1 was all about Project Butter so speed whereas Android 4.2 makes user experience better.
the main difference will be Multi-user support.
for instance gmail gets auto-fit messages feature which means messages are presented vertically so you only have to scroll up and down, and not left and right to read them.
Android 4.1 vs Android 4.2 — The Jelly Bean Brothers
•Support for multiple users (for Android tablets)
•Multiple lockscreen pages with widgets
•Revamped Camera app
•HDR Mode (for supported devices)
•New Clock app
•Quick Settings pull-down menu
•Additional options in Developer Options
•Magnification Gestures and Explore by Touch accessibility features
•UI design changes
Android 4.2, Jelly Bean
Read these articles
get it here ..
About 4.2 Jelly bean !
Advantages of Jelly Bean:
1. Google Now Updates
2. Gesture Typing
4. Quick Settings
5. HDR Mode
6. Photo Sphere
7. Photo Filters
8. New Camera Controls
9. Lockscreen Widgets
10. Multiple User Profiles on Tablets
For Detailed information you can visit this link:
You should check out this link:
If a device supports upgrade from 4.04 to 4.1.1 then after 4.1.1 installation , would it support upgrade to 4.2 from 4.1.1 ( If specs say upgradable to 4.1.1 )
This url will give you a fair idea: http://www.android.com/about/jelly-bean/
Does Jelly bean use less battery than Icecream sandwich
Quoting from yourguide.vzw.com:
"For the most part, Jelly Bean is what the version numbers (4.1 and 4.2) suggest—a moderate upgrade to Ice Cream Sandwich (4.0). It retains a similar look and feel to its predecessor. The status bar at the top and dock at the bottom have changed little, for example, and app icons are identical.
You won’t notice much, if any, difference in the way your apps behave in Jelly Bean, either. App developers also need to please those running earlier versions, and while Jelly Bean is gaining rapidly in popularity, its user base is still relatively small."
More here: http://yourguide.vzw.com/article/ice-cream-sandwich-jelly-bean-android-operating-systems/
Also you can see Wikipedia's article on it.