If you want to jailbreak your phone, the jailbreakme website is the easiest way. All unlocking does is make it to where your phones not locked to a certain carrier anymore. Though you have to jailbreak it to unlock it. If you do decide to jailbreak, just go to jailbreakme.com from your iPhone and hit install. It's that easy! I did this yesterday and it only took 30 seconds! I'm happy with my decision. There's all kinds of neat 3rd party apps in the cydia store that's worth checking out! Hope this helps!
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