You Can Unlock Your AT&T iPhone Through Online Chat

Yes, many people who never had service through AT&T are having success. You just say that you bought it off-contract if/when they ask you for AT&T account information, apparently, and they should do it for you.

All AT&T does is send the IMEI of the phone to Apple, "requiring an AT&T account in good standing" is a stupid requirement on their part. Apple then sends the unlock command out to the iPhone the next time you plug it into iTunes. If an AT&T rep tells you they can't do it, they can, so just try again until you reach a rep who is not a moron. I had to do it multiple times to get the request for an unlock code to my (never-had-service) HP Veer sent, because at the time, they had JUST started to give them out, and few got the memo...

*completely jealous of our southern friends*

Glad to see that AT&T has started doing this for you guys! Hopefully Canadian carriers will start following in your lead... though I doubt they will

Does this support iPhone 4 or just the 4S?

I would imagine any iPhone locked to AT&T which isn't on contract - so any model at all.

I bought mine off if Craigslist and don't currently have an AT&T SIM Card. I tried to get to the chat but I have to have an AT&T account with a linked phone number (Which I don't have). How would I go about getting in the chat?

How do I start a chat session on ATT without logging in? My account has long expired because I've been with T-Mobile for well over 6 months

Call them, or go to an AT&T store. :-/

Im not really believing/liking the "all you need to do next for the unlock to complete is restore your device."
Can anyone confirm the necessity of restoring to get this accomplished?

If wasn't necessary before, you would just plug it into iTunes, and instead of showing your device info first, it would have the white screen much like before you set up an iDevice for the first time, then the device would sync quickly, then a message would appear in iTunes saying that the phone was sucessfully unlocked. (You needed to be connected to the internet too, so it could contact Apple's servers.)

I don't know where people got the idea that you needed to restore to get the unlock. Maybe because they are impatient and don't realize they need to wait a few days for the unlock request to trickle on through to Apple, and as of current, nothing is happening with the iPhones when plugged into iTunes. Especially since iPhones can be PC-less now, why require to be restored through iTunes? Dumb idea.