T-Mobile has begun rolling out its Android 4.3 Jelly Bean update for the Samsung Galaxy S4. The 781MB release delivers everything you’d expect with Android 4.3, as well as lots of TouchWiz improvements and Galaxy Gear compatibility.

The update can be downloaded using the Samsung KIES desktop app for Mac and PC, or directly to your device over a Wi-Fi connection. You should be running Android 4.2.2 Jelly Bean already, with build number “M919UVUAMDL,” and you’ll need at least 50% battery life.

T-Mobile doesn’t provide us with a detailed change log for this update — and neither does Samsung — but here’s what Android 4.3 has brought to the international Galaxy S4:

– OpenGL 3.0 Support
– TRIM Support (Makes the device much faster)
– ANT+ Support
– Samsung KNOX Implementation (KNOX bootloader and dedicated application)
– Samsung Wallet comes pre-loaded
– Improved RAM management
– Improved Display color reproduction (Display looks much sharper than before)
– Improved TouchWiz Launcher (Much less launcher redraws and less lag)
– New Samsung Keyboard
– New Samsung Browser (Full screen by default, new tab interface and more)
– New Reading Mode (Optimized display for reading, used by only a few specific applications)
– New Camera firmware
– Minor UI tweaks (Contacts app, Flashlight Widget, dialog boxes etc)

• SourceT-Mobile