Google silently rolled out the new Android 4.4 KitKat OS last October 31.

Without an elaborate event or conference, Google just announced the availability of Google's latest Android OS. As users continue to explore the new features of the KitKat OS, more hidden feature surfaced.

Here are some of the hidden features of Android 4.4 KitKat that every user must know.

Android 4.4 KitKat is packed with "deep linking" feature that allows you to make a thorough search. For example, when a user for a restaurant will now provide you a link directly on the restaurant's page and with the OpenTable app allows you to set up a reservation on the restaurant. Thus, Android 4.4 KitKat OS improved the search feature, which is the fastest way of accessing every piece of content on your Android device.

The new Google's OS also brings the once Moto X-exclusive feature "Ok, Google," which is a feature that enables the user to "engage in conversation" with your Android device in order to clarify your search intentions. For example, if you mention a name of a particular contact, this special Android feature will give you options like call work or mobile number.

The KitKat version of Android OS comes with Quickoffice, the Microsoft office document editor now included with KitKat. Google has long offered the app, and made it free for all Android and iOS users last month. Users no longer have to download the app as Google takes a bite on Microsoft's Office.

One of the most talked-about features of the new Android 4.4 KitKat OS is full screen mode (Full-screen Immersive mode), which allows you to hide the system elements while running apps, like the notification and navigation bars for example.

The Full-screen Immersive mode that allows you to hide the system elements while running apps, like the notification and navigation bars for example. Through this feature, the content stays visible via translucent bars that blend into the background.

Lastly, Android 4.4 offers the new Storage Access Framework for a centralized file management of all saved data on a device such as documents, photos and texts. The standardized and simple user interface unifies the various apps like Drive, Dropbox, the download folder and the gallery in one central location and shows all the data in one clean overview.