am I on ics or jellybean?

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Ima noob... how do I find out if im on ics or jelly bean? I have a sprint samsung galaxy s 3 running on 4.1 and I heard jb is supposed to have google now, which has an "assistant" like s voice. I dont have it and cant find it in market, plz help me. Im new to the forums and apologize if this has been asked already. My email is xxxxxxxxx. thanku again in advance

 

[Cyber Warrior]

You're on Jelly Bean. 4.0 is ICS...... 4.1 & 4.2 is JB.

For Google Now... Long press on the home button for a few seconds and you'll see a pop up for Recent Apps, Task Manager and Google Now.