Android 4.1 Jellybean

Android 4.1, Jelly Bean
Android 4.1, Jelly Bean, 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.

Everything in Jelly Bean feels fast, fluid, and smooth. Moving between home screens and switching between apps is effortless, like turning pages in a book.
Jelly Beanfeatures improved performance throughout the system, including faster orientation changes, faster responses when switching between recent apps, and smoother and more consistent rendering across the system through vsync and triple buffering.
Jelly Bean has more reactive and uniform touch responses, and makes your device even more responsive by boosting your device's CPU instantly when you touch thescreen, and turns it down when you don't need it to improve battery life.
What's new in Jelly Bean
Accessibility

With Jelly Bean, blind users can use 'Gesture Mode' to reliably navigate the UI using touch and swipe gestures in combination with speech output.
With the new accessibility focus feature, you can move a cursor between controls to maintain a target for the next action or a sourcefor the next navigation event. You can double tap anywhere to launch the current item with accessibility focus.
Text traversal in accessibility now gives you more control – choose to move between pages, paragraphs, lines, words or characters.
TalkBack, a screenreader for Android, now supports gestures to trigger actions, to navigate applications, and traverse text.
Get full support for brailleaccessibility services (download BrailleBack on Google Play).
Android Beam

With Android Beam, you can now easily share your photos and videos.
Instantly pair your phone or tablet to Bluetooth® devices like headsets or speakers that support the Simple Secure Pairing standard by just tapping them together.
Audio Accessories

Support for USB audio docks, shipping later this year.
Browserand WebView

Browser has improved performance, CPU and memory efficiency. With better performance for animations and HTML5 canvases and an updated JavaScript Engine (V8), pages load faster and feel smoother.
Browser now has better HTML5 video support, and has a new user experience. Just touch the video to play and pause, and smoothly transition into and out of fullscreen mode.
Browser nowsupports the updated HTML5 Media Capture specification on input elements.
WebView now supports vertical text, including Ruby Text and other vertical text glyphs.
Calendar

Calendar is more buttery. Content fades in, animations are sprinkled throughout, and swiping/paging between days is smoother.
Calendar will now display event colors if you've given your event a color on your PC.
The 'Today'button on the action bar now shows the current day. When viewing an event's details, you can now email all the guests with a single tap.
Notifications for upcoming events now display more of the event description to let you quickly see relevant details without having to open the app.
Notifications for upcoming events now let you email all the guests without opening the app, and you can choose aquick response such as "Be there in 10 minutes" or type your own.
A new option in Calendar settings lets you create your own default quick responses for emailing guests.
You can now snooze an upcoming event reminder right from the notification.
Calendar has a new 7" tablet layout that is optimized for the form factor.
When viewing Calendar in portrait orientation on tablets, you can hide orexpand controls to give you complete control over how you view your Calendar space.
Calendar will now remember whether you've chosen to hide or expand controls so you have a consistent experience viewing Calendar whenever you open it.
Camera and Gallery

You can now swipe from the camera viewfinder to quickly review photos you've taken without having to leave the camera app. You can swipe back...