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 2.2 :
Android 2.2 is next version of Android after Android 2.1 which was introduced by Google. It had all the features of its previous versions and some new major features were also added in this version. Speed was improved in this version. Other major features like USB tethering, JIT implementation and animated GIFs were introduced in this version. This version had a version name. Its version name is Froyo. The API level in Android 2.2 is 8. It was released on 20 May 2010.
Difference between Android 1.0 and Android 2.2 :
|S.No.||ANDROID 1.0||ANDROID 2.2|
|1.||It is the first version of Android.||It is the next version of Android after Android 2.1.|
|2.||It is predecessor to Android 1.1.||It is predecessor to Android 2.3 and successor to Android 2.1.|
|3.||It was released on 23 September 2008.||It was released on 20 May 2010.|
|4.||The API level in Android 1.0 version is 1.||The API level in Android 2.2 version is 8.|
|5.||It was a very slow android version.||Speed was quite improved in this version.|
|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 ‘Froyo’.|
|8.||It had limited basic features like google maps, gmail, web browser, camera and youtube.||It had all the features of previous versions and some new major features were added in this version.|
|9.||It did not have USB tethering.||USB tethering was introduces in this version.|
|10.||It did not have animated GIFs and JIT implementation.||Features like animated GIFs and JIT implementation were added in this version.|