Hey guys. What are the big differences between 4.2.2 and 4.4?
Android version history - Wikipedia, the free encyclopedia
New features in 4.3
Bluetooth low energy support.
Bluetooth Audio/Video Remote Control Profile (AVRCP) 1.3 support
OpenGL ES 3.0 support, allowing for improved game graphics
Restricted access mode for new user profiles
Filesystem write performance improvement by running fstrim command while device is idle
Dial pad auto-complete in the Phone app
Improvements to Photo Sphere
Reworked camera UI, previously introduced on Google Play edition phones
Added fine-grained application permissions controls (hidden by default)
4K resolution support
Many security enhancements, performance enhancements, and bug fixes
System-level support for geofencing and Wi-Fi scanning APIs
Background Wi-Fi location still runs even when Wi-Fi is turned off
Developer logging and analyzing enhancements
Added support for five more languages
Improved digital rights management (DRM) APIs
Right-to-left (RTL) languages now supported
Clock in the status bar disappears if clock is selected as lockscreen widget
New features in 4.4
Refreshed interface with translucent status and navigation bars on home screen and white status bar icons/text, ability for apps to trigger the translucent appearance.
Optimizations for performance on devices with lower specifications, Low RAM device API
Printing framework
NFC Host Card Emulation for emulating smart cards
WebViews based off Chromium (feature parity with Chrome 30)
Expanded functionality for Notification listener services
Public API for developing and managing text messaging clients, ability to specify a default SMS app.
New framework for UI transitions
Storage access framework for retrieving content and documents from other sources
Sensor batching, Step Detector and Counter APIs
"Immersive" full screen mode, software buttons and status bar accessed with an edge swipe gesture
Audio tunneling, audio monitoring, loudness enhancer
Built-in screen recording
Native infrared blaster API
Expanded accessibility APIs, system-level closed captioning settings