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 2.0：
Android 2.0 是继 Google 推出的 Android 1.6 之后的下一个 Android 版本。它具有之前版本中包含的所有功能，即 Android 1.0、Android 1.1、Android 1.5 和 Android 1.6，并且在此版本中添加了一些突出的功能。此版本引入了 HTML、Microsoft 支持、蓝牙 2.1、动态壁纸和更新的 UI 等功能。这个版本有一个版本名称。它的版本名称是Eclair 。 Android 2.0 中的 API 级别为 5。它于 2009 年 10 月 26 日发布。
Android 1.0 和 Android 2.0 的区别：
| S.No. | ANDROID 1.0 | ANDROID 2.0 |
|---|---|---|
| 1. | It is the first version of Android. | It is the next version of Android introduced after Android 1.0, Android 1.1, Android 1.5 and Android 1.6. |
| 2. | It is predecessor to Android 1.1. | It is predecessor to Android 2.0.1 and successor to Android 1.6. |
| 3. | It was released on 23 September 2008. | It was released on 26 October 2009. |
| 4. | The API level in Android 1.0 version is 1. | The API level in Android 2.0 version is 5. |
| 5. | It is not used anymore in mobile devices. | It is also not used anymore. |
| 6. | It does not have official version name. | It has official version name like its previous version. |
| 7. | It has unofficial version name ‘Apple pie’. | It has official version name ‘Eclair’. |
| 8. | It had limited features like google maps, gmail, web browser, camera and youtube. | It had all the features of all previous versions and some more prominent features were added in this version. |
| 9. | It did not have good user interface. | Updated user interface was introduced in this version. |
| 10. | It did not provide features like live wallpapers and Bluetooth. | Bluetooth 2.1 and live wallpaper features were added in this version. |