: Early leaked builds and official rollouts like XXLPH and XXKP8 showed significant UI speed improvements, though some users noted shorter battery life compared to the stable Gingerbread builds. Evolution to Android 4.1 - 4.4
The S2's life was extended far beyond typical manufacturer support through official updates and a thriving custom ROM community on platforms like XDA Developers and Roots Wiki. Android 4 ICS on Samsung Galaxy S II Skyrocket samsung galaxy s2 android 4
: One of the first biometric security features debuted on this version. : Early leaked builds and official rollouts like