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As we all know recently Google launched its latest version of android i.e.,Android 4.1, Jelly Bean. It is the fastest and smoothest version of Android yet. Jelly Bean improves on the simplicity and beauty of Android 4.0, and introduces a new Google search experience on Android.Simple, beautiful and beyond smart Expandable, actionable notifications.Android has always put you in control when it comes to staying
notified and connected. Now you can take action directly from the notifications shade.
Late for a meeting? Email everyone to let them know. Missed a call? Call them back in an instant. And because they are expandable, you can get an even deeper look into the things that matter most, like multiple emails or photos on Google+.
Widgets work like magic.
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Voice Search
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Google Now
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automatically.Google Now can be accessed via the Google Search app, where you are presented by a clean interface, complete with a preloaded card that tells you the weather of your current location. From here, you are able to run a search within the tablet or through the Internet, taking one of either two routes – through voice or typing.
You can also get the features of Android 4.1 Jelly bean OS in your Android 4 or old OS.