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 帐户、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 4.0：
Android 4.0 是继 Google 推出的“Honeycomb”之后的下一个 Android 版本。此版本引入了一些主要的用户功能，如新的锁屏操作、改进的文本输入和拼写检查、网络数据控制、EAS v14 支持电子邮件应用程序和 WI-FI 直连。此版本中添加了低级流式多媒体、网格布局、拼写检查服务、地址空间布局随机化、VPN 客户端 API、远程设备摄像头启用/禁用、ZSL 曝光、连续对焦和图像缩放等关键开发人员功能。它的版本名称是Ice Cream Sandwich 。 Android 4.0 中的 API 级别为 14。它于 2011 年 10 月 18 日发布。
Android 1.0 和 Android 4.0 的区别：
| S.No. | ANDROID 1.0 | ANDROID 4.0 |
|---|---|---|
| 1. | It is the first version of Android. | It is the next version of Android after ‘Honeycomb’. |
| 2. | It is predecessor to Android 1.1. | It is predecessor to Android 4.0.1. |
| 3. | It was released on 23 September 2008. | It was released on 18 October 2011. |
| 4. | The API level in Android 1.0 version is 1. | The API level in Android 4.0 version is 14. |
| 5. | It did not have developer features. | Some major developer features 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 ‘Ice Cream Sandwich’. |
| 8. | It had limited basic features like google maps, gmail, web browser, camera and youtube. | It had all features of previous versions and some key user and developer features were added in this version. |
| 9. | It did not have WiFi direct. | WiFi direct was introduced in this version. |
| 10. | It did not have lock screen actions. | New lock screen actions were added in this version. |