Android Lollipop (codenamed Android L during development) is the fifth major release of Google's Android mobile operating system and the 12th version of Android, spanning versions 5.0 to 5.1.1. It was announced on April 24, 2014 and launched on October 5, 2015. Lollipop brings a new interface called Material Design with "app bars" at the top of every screen that let users access common features without having to leave their apps. It adds support for touch input methods such as finger typing and multiple fingers on the screen at once, along with improved voice recognition technology in the Google Now service. The OS also includes new features for developers, including split screens and direct replies via SMS or email. The update is available for most current devices through OTA (over-the-air) updates or by downloading it directly from Google's website. After it is installed on your device, you will be able to tell which versions of Android you have because there will be a "Material Design" option in Settings that can only be selected if Android Version is set to 5.0 or higher. If you don't see this option, try restarting your phone or checking your version number again. According to Google, over 90% of active Android devices have updated to Lollipop already. That's more than any previous version of the platform.