Difference Between Android 2.2.2 and Android 2.3.4

1. Support voice and video chat using Google Talk

Improvements included with Android 2.3.3 update

1. Improved and extended support for NFC – this allows applications to interact with more types of tags and access them in new ways. The new APIs have included wider range of tag technologies and allow limited peer to peer communication.

Also it has a feature for developers to request Android Market to not to show their applications to users if the device does not support NFC. In Android 2.3 when an application is called by a user and if the device does not support NFC it returns a null object.

2. Support for Bluetooth non-secure socket connections – this allows applications to communicate even with devices that is not having UI for authentication.

3. New bitmap region decoder added for applications to clip part of an image and features.

4. Unified interface for media – to retrieve frame and metadata from input media file.

5. New fields for specifying AMR-WB and ACC formats.

6. New constants added for speech recognition API – this supports developers to show in their application a different view for voice search results.

1. Supports Google map 5.0

2. Bug fixes on SMS application

User Features:

1. New user interface has a simple and attractive theme in black background, which is designed to give a vivid look while being power efficient too. Menu and settings are changed for ease of navigation.

2. Redesigned soft keyboard is optimized for quicker and accurate text input and editing. And the word being edited and dictionary suggestion is vivid and easy to read.

3. Multi touch key cording to input number and symbols without changing input mode.

4. Selection of word and copy/paste made easy.

5. Improved power management through application control.

6. Provide user awareness on power consumption. Users can view how the battery is used and which consume more.

7. Internet calling – supports SIP calls to other users with SIP account

8. Support Near-field communication (NFC) – high frequency high speech data transfer within a short range (10 cm). This will be useful feature in m commerce.

9. A new download manager facility that supports easy storage and retrieval of downloads.

10. Support for multiple cameras

For Developers

1. Concurrent garbage collector to minimize application pauses and support increased responsiveness game like applications.

2. Touch and keyboard events handled better which minimizes the CPU utilization and Improve responsiveness, this feature is beneficial for 3D games and CPU intensive applications.

3. Use updated third party video drivers for faster 3D graphic performance

4. Native input and sensor events

5. New sensors including gyroscope is added for improved 3D motion processing

6. Provide Open API for audio controls and effects from native code.

7. Interface to manage graphic context.

8. Native access to activity lifecycle and window management.

9. Native access to assets and storage

10. Android NDk provide robust native development environment.

11. Near Field Communication

12. SIP based internet calling

13. New audio effects API to create rich audio environment by adding reverb, equalization, headphone virtualization, and bass boost

14. Built in support for video formats VP8, WebM, and audio formats AAC, AMR-WB

15. Support multiple camera

16. Support for extra large screen