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I am out of contract now on my iPhone 4.
I called at & t and they sent me unlock instructions.
I followed the instruction provided by at & t in the mail and did a backup/restore operation.
At the end of the process I did not get any confirmation saying the iPhone 4 is unlocked.
When I contacted AT & T
"According to our system your device was indeed unlock by us in the service but the itunes process failed. You will need to try it again, and if it does not work contact Apple to see if there is a problem with itunes"
I tried multiple times after that but no luck.
Any help would be greatly appreciated.
Which "restore" are you doing? You need to connect the phone to iTunes and click the Restore button on the Summary screen, not the "restore from backup" that you see when right clicking the name of the phone.
Note that if the phone has ever been jailbroken and the baseband replaced it is no longer possible to do an authorized unlock.
Note also that if your computer was EVER used to jailbreak any iDevice (iPod touch, iPad or iPhone) the network database on your computer is corrupted and you will have to fix your hosts file before your phone can be activated.
I used the Restore from summary Page, that resolved the problem.
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