What are the drawbacks of the version of Android used in Nokia models compared to regular Android versions? For example, how does the Android as used in Nokia X , XL compare to Android Icecream Sandwich , Jelly Bean and Kitkat?
Nokia uses Android 4.1.2 JellyBean OS as its base and API level 18.So,any apps depending on KitKat OS will not run on new Nokia Platform 2 OS.No access to Google Play store.
Nokia X Platform overview
Nokia X is a customized platform built on the Android Open Source Project (AOSP),
AOSP/Code Aurora Vanilla Android 4.1.2 for Nokia X (normandy)
Nokia X: Five reasons why it is not just another Android
Nokia X: Six reasons why this is no plain vanilla Android smartphone