Here are the biggest updates to the new Android:
Near Field Communications: allowing your phone to act as a “mobile wallet” so you can pay for things by swiping your phone over a terminal.
- SIP Support: With the SIP API, applications can now have voice calling features without having to manage sessions, transport-level communication, or audio.
- New Sensor support: Ggyroscope, rotation vector, linear acceleration, gravity, and barometers.
- Front-facing camera support: Allows apps to access front facing cameras for voice chat, etc.
- Larger Screen Support: The SDK now includes an X-Large screen option, specifically for tablet support and other large screens.
- Faster Performance: The Dalvik virtual machine that is the heart and soul of Android has gotten a garbage collector, and the JIT compiler that was added in 2.2 has received further optimizations. The OpenGL ES video drivers have been updated, and support for the Khronos OpenSL ES audio API has been added to let applications control audio input, output, and processing directly from the native code.