cisco_tech
Herald
@Dipen. You dont need apply any unlock or crack. coz your phone is Factory unlocked. Ask your service provider they will give microsim for free. 
But you can Jailbreak via redsnow. Which version currently running on phone ?
Modmyi and Hackint0sh are nice forum to get most out of it from your iphone.
Jailbreak / Downgrading / Upgrading
http://www.hackint0sh.org/f123/

But you can Jailbreak via redsnow. Which version currently running on phone ?
Modmyi and Hackint0sh are nice forum to get most out of it from your iphone.
Jailbreak / Downgrading / Upgrading
http://www.hackint0sh.org/f123/