Difference between Android 1.0 and Android 9

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 9 :
Android 9 is the next version of Android after Android 8.1 which was introduced by Google. It had all the features of its previous versions and some key user features were added in this version. Key user features like rounded corners across the UI, quick settings menu change, notification bar, new transitions when switching between apps, volume slider updated, the power options with a screenshot button and biometric authentication were added in this version. Its version name is Pie. The API level in Android 9 is 28. It was released on 09 August 2018.

Difference between Android 1.0 and Android 9 :

S.No.	ANDROID 1.0	ANDROID 9
1.	It is the first version of Android.	It is the next version of Android after Android 8.1.
2.	It is predecessor to Android 1.1.	It is predecessor to Android 10 and successor to Android 8.1.
3.	It was released on 23 September 2008.	It was released on 09 August 2018.
4.	The API level in Android 1.0 version is 1.	The API level in Android 9 version is 28.
5.	It has 0 % android market share.	It has 10.4 % 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 ‘Pie’.
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 UI updates for various functionalities.	UI updates for notification bar and volume slider button were added in this version.
10.	It did not have biometric authentication.	Biometric authentication was introduced in this version.