I GOT IT UNLOCKED:
No I'm not going to link you to some sketchy site that I secretly work for only to have them tell you their "servers are down" or whatever, I got my ATT Lumia 920 unlocked through ATT itself. Here's how I did it:
THIS WILL ONLY WORK IF YOU HAVE AN ACTIVE ACCOUNT WITH AT&T (NOT PREPAID):
Called their international number from outside of the US
Gave them my account information and IMEI and asked them to look into an unlock
Got the predictable response that the phones weren't unlockable until June or something
Asked the CSR to make me a support ticket anyways and forward it to tech support
4 days later I got an email with a working unlock code (although the instructions for plugging it in seemed to be for old nokia featurephones, not Lumias, so you have to google how to do it)
Hope this helps you guys! I made an account just to help out, coz I think it's absolutely ridiculous that they won't unlock their phones.
Cheers,
Josh
OK. The same day I saw this I gave it another try.
2 phone calls to ATT international number, no luck. International number do not have technical support option so I chose "unlocking my Iphone" as it appears to be the only option to talk to a human. The first one says she's gonna get into trouble and then played silence game on me. The 2nd one says her manager already denied so no point opening a ticket and just go round and round on that stupid statement like a voice recorder, so I hang on her.
The third time I called local number and choosing technical support. The guy was able to see that I called for the same problem a couple times within the hour. So after I explained my situation he tried once and fail and immediately he start a case ticket and told me to wait for a couple days. A polite and helpful guy.
So 2 days later I received this and unlocked my phone.
PS. I was a contract customer and cleared my balance for over a month before I move oversea for my new job.
GOOD LUCK TO EVERYONE!
THIS IS AN AUTOMATED EMAIL PLEASE DO NOT REPLY BACK TO "OKCQSubsidyUnlock" AS ALL MESSAGES SENT TO THIS EMAIL ADDRESS ARE AUTOMATICALLY DELETED WITHOUT BEING READ. PLEASE CONTACT CUSTOMER SERVICE 1-800-331-0500 FOR ADDITIONAL ASSISTANCE.
BEFORE ATTEMPTING TO USE THE UNLOCK CODE BELOW PLEASE VERIFY THE FIRST 15 DIGITS OF YOUR IMEI BY TYPING *#06# ON YOUR PHONE?S KEYPAD. THE UNLOCK CODE IS SPECIFIC TO THE IMEI. IF YOUR IMEI DOES NOT MATCH THE IMEI BELOW PLEASE CONTACT CUSTOMER SERVICE, DO NOT USE THIS CODE AS IT COULD PERMANENTLY LOCK YOUR HANDSET.
EMAIL: @outlook.com
CASE: CM20130226_60772478
MOBILE: 316*******
MANUFACTURER: Nokia Lumia
MODEL: 920
IMEI:
UNLOCK CODE: 13021934669951074405
NOTE:
The customer only has five (5) tries to unlock the phone.
If this process is unsuccessful five times in a row, the phone will be permanently locked to the AT&T network.
INSTRUCTIONS:
?Switch the phone off
?Insert not valid SIM Card into the phone
?Switch the phone on and enter SIM card PIN code if requested
?Wait for the SIM unlock UI to open
?Type in the SIM unlock code (20 digits) and press "enter"
Thank you for contacting AT&T Mobility. We appreciate your business.