Difference between Android 1.0 and Android 4.2.2

1. Android 1.0 :
Android 1.0 is the very first version of Android which was introduced by Google. It had some basic features including web browser support, camera support, Gmail accounts, Google maps and Youtube application. Although it does not have the official version name like further introduces versions but unofficially it is called Apple Pie. The API level in Android 1.0 version is 1. It is not used anymore in the mobile devices. It was released on 23 September 2008.

2. Android 4.2.2 :
Android 4.2.2 is the next version of Android after Android 4.2.1 which was introduced by Google. It has all the features of its previous versions and some new user and developer features were added in this version. Key user features like toggling Wi-Fi and bluetooth state in quick settings using long press, percentage showing and estimated time remaining in the active download notification, wireless charging, low battery sound, gallery application updation for faster loading with new image transition were added in this version. Its version name is Jelly Bean. The API level in Android 4.2.2 is 17. It was released on 11 February 2013.

Difference between Android 1.0 and Android 4.2.2 :

S.No.	ANDROID 1.0	ANDROID 4.2.2
1.	It is the first version of Android.	It is the next version of Android after Android 4.2.1.
2.	It is predecessor to Android 1.1.	It is predecessor to Android 4.3 and successor to Android 4.2.1.
3.	It was released on 23 September 2008.	It was released on 11 February 2013.
4.	The API level in Android 1.0 version is 1.	The API level in Android 4.2.2 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 and developer features were added in this version.
9.	It had wired and slow charging.	Wireless charging feature was introduced in this version.
10.	It did not have developer features.	It had developer features like secure USB debugging.