What does Unlocking the Iphone 3G do

[Klakman]

When you use a sim card such as the stealth slim does this make it so I can use and carrier such a verizon? Is syncing the iphone and updating it still possible. What happens when you Unlock it?

[Unregistered]

I am not sure of it. It is a kind of temporary unlock and allows the phone to be used with other GSM network and not to CDMA. If we unlock it the user is able to switch networks, avoid data roaming, high resale value for the phone. So if you want to unlock a GSM phone and allow it to be used on other GSM phones you can use it. If you need a permanent solution then visit Simpleunlocking.com and get their remote unlock process along with free instructions.