Nexus 7

Android Jelly Bean 4.2 operating system, initially shipped on the Nexus 7,  provides a great new tablet experience that outshines previous versions of Android. If you have a Nexus 7, or another tablet running the latest version of Android, be sure to read these tips to make full use of your tablet.
The most impressive feature in Jelly Bean is probably 'Google Now'. 'Google Now' is smart enough to provide context-sensitive information when you need it, whether it’s journey information, package tracking, or the weather. It’s a worthy competitor to Siri that does things Siri doesn’t even try to do.
Some of these features are only available on Android 4.2, while most are also available on Android 4.1. Both are named Jelly Bean.