Is HTC Sensation 4G based on Android 2.2 or Android 2.3 OS? Is HTC Sensation 4G based on Android 2.2 or Android 2.3 OS?
HTC Sensation comes with the Android 2.3 Gingerbread but "wearing" the HTC Sense (3.0) mod. 

Sensation is also in-line for an upgrade to ICS (Ice Cream Sandwich (Android 4.0)) early in 2012.