Cupcake, Gingerbread, Froyo, Android 2.3, Android 3.1, oh man it can be so confusing to know what OS you are running with all these different names and references. Luckily, checking out what OS version your device is currently running is a breeze and can be done at any time. Follow a few simple steps and you will know exactly what your device is running, so let's take a look. .
1-Open your devices settings
2-Scroll to about phone
3-Look for line which says "Android Version"
Now, understanding what those Android version numbers really mean is a whole other thing, but we got you covered there as well. Take a look here to gain a better understanding of the different flavors of Android, along with some of the differences between them all.