This will jack up the value of your iPhone before you sell it. Pretty much, I know a guy who knows a guy..This is a completely legal and legit factory unlock. Your phone will be PERMANENTLY unlocked for all GSM networks. Restoring or updating your phone will not mess it up in any way.You will not need to send your phone anywhere for this unlock.Message me with any questions you might have! $12
What's funny about it? It used to be incredibly common, all over eBay and such. Now it's no longer allowed on eBay, so I'm offering it for less than you'll find it anywhere else (~$20). It allows you to use an AT&T iPhone on any GSM network. What's the funny part?