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 :
Android 4.2 is next version of Android after Android 4.1.2 which was introduced by Google. Some key user features like Lockscreen widgets, gesture typing, wireless display with Miracast and multi-user for tablets were added in this version. Key developer features like vsync timing, triple buffering, reduced touch latency, CPU input boost, Native RTL support, external display support, nested fragments, RenderScript compute, RenderScript ScriptGroups, built-in intrinsics like blur, FilterScript for high performance image processing were added in this version. Its version name is Jelly Bean. The API level in Android 4.2 is 17. It was released on 13 November 2012.
Difference between Android 1.0 and Android 4.2 :
|S.No.||ANDROID 1.0||ANDROID 4.2|
|1.||It is the first version of Android.||It is the next version of Android after Android 4.1.2.|
|2.||It is predecessor to Android 1.1.||It is predecessor to Android 4.2.1 and successor to Android 4.1.2.|
|3.||It was released on 23 September 2008.||It was released on 13 November 2012.|
|4.||The API level in Android 1.0 version is 1.||The API level in Android 4.2 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 feature were added in this version.|
|9.||It did not have lockscreen widgets.||Lockscreen widgets were introduced in this version.|
|10.||It did not have multi-user facilities for tablets.||Multi-user facilities for tablets were introduced in this version.|