As the official release date for Android 4.3 narrows in, we are starting to see more and more test firmware leaks provided by certain developers that have inside access to them. This time, developer DesignGears has posted on his Twitter account several test firmwares for the following AT&T devices: Galaxy S III (SGH-I747), Galaxy Note II (SGH-I317), Galaxy S4 (SGH-I337) and Galaxy S4 Active (SGH-I537). While you cannot install these firmwares on other devices except for the AT&T branded ones, it does give us a preview on what's going to be included in the update and also it indicates that the official update is getting closer.This is what we know it is new in Android 4.3:
Added Galaxy Gear support
Added Samsung KNOX and Samsung Wallet
Updates TouchWiz, much smoother and less lag on the launcher.
New Samsung Keyboard and Browser
Added Reading Mode, allowing you to have a better reading experience on some apps
Updated camera app
TRIM support, a feature that makes the device faster
Major overall system improvements that lead to a better user experience and device performance
Some User Interface modifications.
If you have an AT&T device and you are interested in using any of these firmwares, go ahead and visit the official Xda Forum Thread where you can find the download link and some instructions and user comments:AT&T Galaxy S3 I747 -Android 4.3
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