Overview of the New Features in Android 4.4 KitKat
Today, alongside the unveiling of the Nexus 5, Android 4.4 also revealed itself, though the smartwatch did not make an appearance, the new system has laid a solid foundation for wearable devices.
One of the most important features of Android 4.4 is its optimization for low-memory devices; that is, the system requirement starts at 512MB RAM. "Pichai" emphasized multiple times during the release of the new system that KitKat's optimization for low-end phones will also benefit smartwatches and other wearable devices.
The entire interface of KitKat looks cleaner and simpler. Its status and notification bar have been changed to transparent, and it includes a new launcher and updated Google Roboto font. These subtle changes won't feel unfamiliar, and users familiar with Jelly Bean can quickly get started.
Meanwhile, the 4.4 system continues to enhance Google Now (activated by swiping from left to right on the screen). Users can perform related searches using voice commands. Google stated that the voice recognition engine in the new system has improved accuracy by 25% ("OK, Google start search"). Additionally, Google Now can send useful information based on the user's location, frequently visited websites, or favorite TV shows. The new Google Now also brings changes to the dialing interface in the 4.4 system, allowing quick searches for names and even place names.
Hangouts in Android 4.4 integrates the original SMS application (users can choose the default SMS app), enabling them to send text messages, instant messages, and even voice and video calls. It also includes sharing the current location (Hello iMessage) and images stored in Google Drive or any other cloud storage service.
In addition, the new system introduces HDR+ for the Nexus 5, allowing users to take multiple photos in burst mode and combine them into one. This feature also incorporates a "new noise mode" to differentiate between standard actions and sensor noise.
Besides the aforementioned new features, Android 4.4 also adds quick access to open the camera from the lock screen; when entering an application, the three buttons at the bottom of the screen will automatically hide (full-screen mode); additional emoji symbols in keyboard input; support for AirPrint wireless printing (currently limited to HP); batch processing of hardware sensors (no need to call each one individually, suitable for low-power health applications requiring long-term sensor use); and automatic resolution switching when playing back videos (finally supports screen recording function, saved in MP4 format).
Finally, Android 4.4 marks an important step for Google in addressing fragmentation. It also lays the groundwork for wearable devices, and they hope that Google Now becomes an integral part of every user's life.