1. 安卓 1.1：
Android 1.1 是继Android 1.0 之后Google 推出的第二个Android 版本。它具有以前版本(即 Android 1.0)中包含的所有功能，并且在此版本中还添加了更多功能。在呼叫者应用程序中添加了一些功能，例如隐藏和显示数字键盘。此版本还增加了保存彩信附件的功能。它也没有像 Android 1.0 那样的正式版本名称，但非正式地称为Banana Bread 。 Android 1.1 中的 API 级别为 2。它于 2009 年 2 月 9 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 1.1 和 Android 4.0 的区别：
| S.No. | ANDROID 1.1 | ANDROID 4.0 |
|---|---|---|
| 1. | It is the second version of Android. | It is the next version of Android after Honeycomb. |
| 2. | It is predecessor to Android 1.5 version. | It is predecessor to Android 4.0.1 version. |
| 3. | It was released on 09 February 2009. | It was released on 18 October 2011. |
| 4. | The API level in Android 1.1 version is 2. | The API level in Android 4.0 version is 14. |
| 5. | It does not have official version name like its successors. | It has official version name like its other previous versions. |
| 6. | It has unofficial version name ‘Banana Bread’. | It has official version name ‘Ice Cream Sandwich’. |
| 7. | It had all the features of previous version and two more features were added in this version. | It had all features of previous versions and some key user and developer features were added in this version. |
| 8. | It did not have WiFi direct. | WiFi direct was introduced in this version. |
| 9. | It did not have lock screen actions. | New lock screen actions were added in this version. |
| 10. | It did not have developer features. | Various key developer features were added in this version. |