Android 4.4 KitKat is now officially available, not to worry though, the feel still like home for current Android users.
If you unlock your phone, you can say, “OK Google” to activate voice search without needing to tap anywhere on the screen. Also, when you turn on Google Now, you can swipe all the way to the left to pull it up.
Those two features are exclusive to KitKat on the Nexus 5, at least until future notice.
That said, the Nexus 5 is not the only phone that allows you to use voice commands to launch Google Search. Motorola’s Moto X, Droid Ultra, Droid Maxx, and Droid Mini all sport Touchless Controls, where you can say “OK Google” to start a search without needing to touch the phone at all.
The Hangouts app now handles your SMS and MMS messages along with your video calls. The new Hangouts app also allows you to share your location.
Extra; Even though emoji was available in earlier versions of Android, they officially come to Android in KitKat.
Emoji are part of the stock Google keyboard now and can be used anywhere you input text.
Another rumored feature that has now become fact is printing from your phone or tablet.
You can print to printesr connected to Google Cloud Print, to HP ePrint printers, and to other printers that have apps in the Google Play Store.