For example, the notification bar at the top of the screen is now completely transparent, while the status icons are plain white. All location settings are consolidated in a single menu, too. Support for wireless printing over Wi-Fi and Bluetooth has been included, as well. The full-screen Immersive mode is also on board.
Among the other goodies that the KitKat update for the Galaxy S4 Active has in tow are the improved closed captioning, security, battery life, call reliability, enhanced copy/paste feature, and support for color emojis. Additionally, it's now a tad easier to insert images, photos, and videos in emails or other types of messages. The lock screen has also seen some nifty improvements - a quick button allows users to access the camera, while full-screen media controls and album art will be displayed on the lock screen of the Galaxy S4 Active every time you listen to music.
However, be advised that AT&T has just started to roll out the KitKat update, so you might not get it right away. Nevertheless, you probably know that you can manually check if it's available for your device by going to Settings > More > About device > Software update > Update.
The Samsung Galaxy S4 Active, which got released back in June 2013, comes with a quad-core Qualcomm Snapdragon 600 SoC, a 5-inch TFT LCD display with a resolution of 1080 x 1920 pixels, 2GB of RAM, and an 8MP camera at the back. Sammy's smartphone is IP67-certified - it's water and dustproof, just like the recently-launched Samsung Galaxy S5. This means that you can dunk the Galaxy S4 Active into a meter of water for up to 30 minutes and the device will live to tell the tale.
source: Samsung, AT&T via UnwiredView