1. Android 4.1 Jelly Bean: Google Now
Like Siri but for Android, Google Now brings a more sophisticated way of getting information you need both quickly and efficiently. Using your search and location history a series of 'cards' which look inspired by a similar design seen on the Palm Pre, will display information throughout the day to help you find out about the best bus route to get to work or the latest results for your favourite sports team.
2. Android 4.1 Jelly Bean: Google Now Unlock
Similar to the Camera Unlock introduced in Android 4.0 Ice Cream Sandwich, Jelly Bean users can now jump straight into new intelligent search engine Google Now from the Unlock screen.
3. Android 4.1 Jelly Bean: Project Butter
As ridiculous as the name sounds, Project Butter seeks to improve navigating around your smartphone or tablet, making vital changes under the hood which makes everything quicker and should deliver n improved touch response when you are scrolling through your apps for instance.
4. Android 4.1 Jelly Bean: Google Now
One of the ways you can access Google Now is by swiping up from the home button to access the intelligent information system that could very well blow Apple's Siri out of the water.
5. Android 4.1 Jelly Bean: Camera
The decision not to include a rear-facing camera on the Nexus 7 means the tablet misses out on a some nice new additions to the Camera app. Android 4.1 Jelly Bean smartphone snappers will however be able to benefit from being able to review photos straight from the camera application and swipe away photos you don't want to keep similar to the way you can dismiss applications using the Recent App feature still present from Android 4.0 Ice Cream Sandwich.