1. Android 1.0：
Android 1.0是Google推出的第一个Android版本。它具有一些基本功能，包括Web浏览器支持，相机支持，Gmail帐户，Google地图和Youtube应用程序。尽管它没有正式的版本名称(如进一步介绍的版本)，但非官方地将其称为Apple Pie 。 Android 1.0版本中的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. Android 7.1：
Android 7.1是Google推出的继Android 7.0之后的下一个Android版本。此版本中添加了重要的用户功能，如白日梦虚拟现实模式，夜灯，存储管理器的改进，触摸和显示管理的性能改进以及启用指纹向下滑动手势的选项。在此引入了关键开发人员功能，例如快捷方式管理器API，支持循环应用程序图标，键盘图像插入，VR线程调度改进，增强的墙纸元数据，多端点呼叫支持，对可视语音邮件的源类型支持以及用于管理视频电话的运营商配置选项。版本。它的版本名称是Nougat 。 Android 7.1中的API级别为25。它于2016年10月4日发布。
Android 1.0和Android 7.1之间的区别：
| S.No. | ANDROID 1.0 | ANDROID 7.1 |
|---|---|---|
| 1. | It is the first version of Android. | It is the next version of Android after Android 7.0. |
| 2. | It is predecessor to Android 1.1. | It is predecessor to Android 7.1.1 and successor to Android 7.0. |
| 3. | It was released on 23 September 2008. | It was released on 04 October 2016. |
| 4. | The API level in Android 1.0 version is 1. | The API level in Android 7.1 version is 25. |
| 5. | It has 0 % android market share. | It has 7.8 % android market share. |
| 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 ‘Nougat’. |
| 8. | It had limited basic features like google maps, gmail, web browser, camera and youtube. | It had all features of previous versions and some new user and developer features were added in this version. |
| 9. | It did not have night light. | Night light was introduced in this version. |
| 10. | It did not have virtual reality. | Daydream virtual reality mode was added in this version. |
| 11. | It did not have developer features. | Various developer features like shortcut manager APIs etc. were added in this version. |
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