I've been reading all the post and interesting to see that no one has been able to unlock their Lumia 920. I just bought mine 2 weeks ago from AT&T with no commitment. So let me tell you guys my dilenma.
Ok, I want to use mine on T-mobile network. So I bought it no commitment on our company's account. After that, I called AT&T on Dec 4th that I need to unlock the phone because I'll be travelling to Europe for work on and off and I'll like to use another SIM card on my phone. Fair enough, the guy looked at the account and saw that it was no commitment, and tried to look for the code but couldn't fine it. He place me on hold and when he finally got back, he said they can unlock it but they need proof of purchase that I paid full price. He gave me a case number. I faxed the proof to them and they gave me a resolution date of 12/12/12. I called them last week and they told me they don't have the code and still waiting on the manufacturer for the code. (This will tell folks here who are been told by those unlocking sites that AT&T will release the code soon, IT'S A LIE. AT&T don't even have the codes yet)
Well, back on my story, fortunately, I got the code on email today. I went to T-mobile and got a new SIM card. I put in the sim card, turn on the phone and got the following message: "The SIM card can only be used on specific networks. Contact your customer service center for the unlock code. 10 attempts remaining". "Enter PIN".
I entered the unlock code I got from AT&T and it says "incorect pin".
I've been on phone with AT&T all evening and they still can't do anything about it. They are confused. I'm confused too, because, this is not the 1st phone I'm unlocking. It's always simple. Put in the code once and BAM, it's unlocked.
Does, anyone have a clue what I'm or WE are doing wrong?