Though Google released Oreo more than a year ago, its adoption is still at around 21.5%. Marshmallow and Nougat devices are still the highest while devices with Lollipop are also significantly high. Users of devices with old versions of Android are not only deprived of new features in the latest versions of Android, those devices are vulnerable to security hacks due to lack of security enhancements done by Google. Moreover, in all likelihood developers have stopped supporting applications on old versions of Android.