Android 1.0和Android 4.2.1之间的区别

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 4.2.1：
Android 4.2.1是Google推出的继Android 4.2之后的下一个Android版本。它具有以前版本的所有功能，并且在此版本中添加了一些新的用户功能。在此版本中添加了关键的用户功能，例如蓝牙游戏手柄支持和操纵杆HID设备支持。此版本中修复了一些主要错误。此版本未添加任何新的开发人员功能。它的版本名称是Jelly Bean 。 Android 4.2.1中的API级别为17。该级别于2012年11月27日发布。

Android 1.0和Android 4.2.1之间的区别：

S.No.	ANDROID 1.0	ANDROID 4.2.1
1.	It is the first version of Android.	It is the next version of Android after Android 4.2.
2.	It is predecessor to Android 1.1.	It is predecessor to Android 4.2.2 and successor to Android 4.2.
3.	It was released on 23 September 2008.	It was released on 27 November 2012.
4.	The API level in Android 1.0 version is 1.	The API level in Android 4.2.1 version is 17.
5.	It has 0 % android market share.	It has 1.5 % 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 ‘Jelly Bean’.
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 features were added in this version.
9.	It did not have bluetooth gamepads support.	Bluetooth gamepads support was added in this version.
10.	It has several bugs and issues.	Some major bugs and issues were fixed in this version.

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