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<a href="http://postlinksforcash.com/l-answers-anything/jk.cgi?i=R7t7HSS&d=http%3A%2F%2Fwww.youtube.com%2Fwatch%3Fv%3DVvKzxgpN-sQ&n=30" target="_self">Unlock Iphone</a>
You can unlock your iPhone 3Gs anywhere if you have internet:)
No. You only need to unlock an iPhone if you want to use a different cell phone company with your iPhone.
The link below is the needed software to unlock the iPhone.
you can unlock any iphone or phone at unlock att .com i did my whole familys iphones there