Use Quick Settings & Notifications

Android's drop-down notifications menu has been overhauled inside Android Jelly Bean. There are now two menus you can access depending on what you want. 

Slide one finger from the top of the display to access general notifications and two fingers for Quick Settings (Wi-Fi, Brightness, Battery, Aeroplane Mode, Bluetooth, and Alarm).

Notifications inside Android Jelly Bean have a serious shot in the arm too. You can read and reply to messages by either tapping reply on the message or using two fingers to expand it. It's simple, intuitive, and something you'll use on a daily basis.

3. Try Face Unlock