1. 安卓 1.0：
Android 1.0 是 Google 推出的第一个 Android 版本。它有一些基本功能，包括网络浏览器支持、相机支持、Gmail 计数、谷歌地图和 Youtube 应用程序。虽然它没有像进一步介绍版本那样的正式版本名称，但非正式地称为Apple Pie 。 Android 1.0 版本的 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. 安卓 2.3.5 :
Android 2.3.5 是继 Google 推出的 Android 2.3.4 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用户功能。该版本改进了网络性能，修复了蓝牙问题，并改进了 Gmail 应用程序。此版本中未添加新的开发人员功能。它的版本名称是Gingerbread 。 Android 2.3.5 中的 API 级别为 10。它于 2011 年 7 月 25 日发布。
Android 1.0 和 Android 2.3.5 的区别：
| S.No. | ANDROID 1.0 | ANDROID 2.3.5 |
|---|---|---|
| 1. | It is the first version of Android. | It is the next version of Android after Android 2.3.4. |
| 2. | It is predecessor to Android 1.1. | It is predecessor to Android 2.3.5 and successor to Android 2.3.4. |
| 3. | It was released on 23 September 2008. | It was released on 25 July 2011. |
| 4. | The API level in Android 1.0 version is 1. | The API level in Android 2.3.5 version is 10. |
| 5. | It had a simple Gmail application. | Improved Gmail application was introduces 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 has 0 % Android market share. | It has 0.3 % Android market share. |
| 9. | It had limited basic features like google maps, gmail, web browser, camera and youtube. | It had all features of previous versions and some new features were also added in this version. |
| 10. | It did not have Bluetooth connectivity. | Bluetooth connectivity issues were fixed in this version. |