1. Android 1.0：
Android 1.0是Google推出的第一个Android版本。它具有一些基本功能，包括Web浏览器支持，相机支持，Gmail计数，Google地图和Youtube应用程序。尽管它没有正式的版本名称(如进一步介绍的版本)，但非官方地将其称为Apple Pie 。 Android 1.0版本中的API级别为1。在移动设备中不再使用它。它于2008年9月23日发布。
2. Android 2.3：
Android 2.3是Google推出的继Android 2.2之后的下一个Android版本。它具有以前版本的所有功能，并且在此版本中还添加了一些新的主要功能。此版本中引入了一些关键的用户功能和开发人员功能。此版本中添加了社交网络和视频通话功能等主要功能。除了复制/粘贴外，还改进了电源管理和键盘。它的版本名称为Gingerbread 。 Android 2.3中的API级别为9。它于2010年12月6日发布。
Android 1.0和Android 2.3之间的区别：
| S.No. | ANDROID 1.0 | ANDROID 2.3 |
|---|---|---|
| 1. | It is the first version of Android. | It is the next version of Android after Android 2.2. |
| 2. | It is predecessor to Android 1.1. | It is predecessor to Android 2.3.3 and successor to Android 2.2. |
| 3. | It was released on 23 September 2008. | It was released on 06 December 2010. |
| 4. | The API level in Android 1.0 version is 1. | The API level in Android 2.3 version is 9. |
| 5. | It did not have developer features. | Some key developer features like NDK, audio affects api, multiple camera sensor support, strict mode debugging were added in this version. |
| 6. | It does not have official version name. | It has official version name like its other previous versions. |
| 7. | It has unofficial version name ‘Apple Pie’. | It has official version name ‘Gingerbread’. |
| 8. | It had limited basic features like google maps, gmail, web browser, camera and youtube. | It had all the features of previous versions and some new major user and developer features were added in this version. |
| 9. | It did not have video calling service. | It supported video calling. |
| 10. | It did not provide social networking features. | Social networking features were added in this version. |
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