Asus announced that with immediate effect ZenFone4 (A400CG), ZenFone5 (A500 / A501CG) , ZenFone6 (A600 / A601CG) will be upgraded to Android 4.4 (KitKat) OS. This upgrade includes the exclusive ASUS ZenUI new feature that allows users more convenient, intuitive way to interact with the phone, will be used to enhance the experience to a new level. Built-in upgrade program through the phone, your phone will begin to receive upgrade notifications, via Wifi connection to download the upgrade. This update focuses on new phone calls harassment interception, new video effects can be added to the movie in a variety of special effects filters, new phone number search function strange, if you’re mode, the original card claw back mechanism and dual card dual standby access.

According to the Asus, the update includes the following systems and functional improvement :

1. Systems and input method

2. Phone and SMS features

3. Camera and display functions

4. Application software and programs

5. “What’s Next” feature