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 counts, 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 2.0 :
Android 2.0 is next version of Android after Android 1.6 which was introduced by Google. It had all the features that were included in the previous versions i.e. Android 1.0, Android 1.1, Android 1.5 and Android 1.6 and some prominent features were added in this version. Features like HTML, Microsoft support, Bluetooth 2.1, live wallpapers and updated UI were introduced in this version. This version had a version name. Its version name is Eclair. The API level in Android 2.0 is 5. It was released on 26 October 2009.
Difference between Android 1.0 and Android 2.0 :
|S.No.||ANDROID 1.0||ANDROID 2.0|
|1.||It is the first version of Android.||It is the next version of Android introduced after Android 1.0, Android 1.1, Android 1.5 and Android 1.6.|
|2.||It is predecessor to Android 1.1.||It is predecessor to Android 2.0.1 and successor to Android 1.6.|
|3.||It was released on 23 September 2008.||It was released on 26 October 2009.|
|4.||The API level in Android 1.0 version is 1.||The API level in Android 2.0 version is 5.|
|5.||It is not used anymore in mobile devices.||It is also not used anymore.|
|6.||It does not have official version name.||It has official version name like its previous version.|
|7.||It has unofficial version name ‘Apple pie’.||It has official version name ‘Eclair’.|
|8.||It had limited features like google maps, gmail, web browser, camera and youtube.||It had all the features of all previous versions and some more prominent features were added in this version.|
|9.||It did not have good user interface.||Updated user interface was introduced in this version.|
|10.||It did not provide features like live wallpapers and Bluetooth.||Bluetooth 2.1 and live wallpaper features were added in this version.|