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 4.4：
Android 4.4 是继 Google 推出的 Android 4.3 之后的下一个 Android 版本。它具有以前版本的所有功能，并在此版本中添加了各种新的用户和开发人员功能。此版本中添加了关键用户功能，例如屏幕录制、新的半透明系统 UI、增强的通知访问、隐藏式字幕的系统范围设置。它的版本名称是KitKat 。 Android 4.4 中的 API 级别为 19。它于 2013 年 10 月 31 日发布。
Android 1.1 和 Android 4.4 之间的区别：
| S.No. | ANDROID 1.1 | ANDROID 4.4 |
|---|---|---|
| 1. | It is the second version of Android. | It is the next version of Android after Android 4.3. |
| 2. | It is successor to Android 1.0 version. | It is successor to Android 4.3 version. |
| 3. | It is predecessor to Android 1.5 version. | It is predecessor to Android 4.4.1 version. |
| 4. | It was released on 09 February 2009. | It was released on 31 October 2013. |
| 5. | The API level in Android 1.1 version is 2. | The API level in Android 4.4 version is 19. |
| 6. | It has 0 % android market share. | It has 6.9 % android market share. |
| 7. | It does not have official version name like its successors. | It has official version name like its other previous versions. |
| 8. | It has unofficial version name ‘Banana Bread’. | It has official version name ‘KitKat’. |
| 9. | 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 various new user and developer features were added in this version. |
| 10. | It did not have screen recording feature. | Screen recording feature was added in this version. |
| 11. | It did not have developer features. | Various developer features like printing framework, full-screen immersive mode etc were added in this version. |