what is Android Jelly Bean?

                          Its a next version of Android operating system today, version 4.1, and as expected, it’s called Jelly Bean.
                          Jelly Bean is a lot more smooth than any previous Android version, and with the potentially market-defining Nexus 7 being one of the first devices to release with the new firmware as standard, Google has timed it to perfection. Smooth is one thing, of course, but as well as packing in plenty of new goodies, it’s also a great deal safer than any iteration before it.Google had an initiative called Project Butter that was used to make Android more responsive, including optimizing touches on the display. You can immediately tell everything seems just a bit smoother when you use Jelly Bean.