My New Unlocked IPhone 4 S is showing "310-410" as a carrier while roaming (instead of AT&T)

Question

Hello,
Yesterday, I wanted to buy an unlocked IP4 S from New York Soho store.
They told me that they don't have unlocked in stock, but if I pay full price ($649) they can unlock an AT&T phone for me.
I said ok and purchased the phone. They put my Turkish sim card in it and itr worked greatly.
My operater is Turkcell and they work with AT&T in US. Normally in most of the time I see AT&T in the left top corner as a carrier. But sometimes, AT&T changes to "310-410". Does any anybody know what does it stand for? Is it normal? I can make calls or messaging in 310-410 mode as well but I still couldn't understand what it is.
In some of the forums, I saw some people had the same issue. They went to talk to a genius and Apple changed their phones with the new one.
Do you think, I also need to return my phone? Is there any difference between a factory unlocked and an ATT unlocked phone?
Appreciate your help
Thanks

Answer 1

You may have not understood that he was referring to an Apple Store in Soho, but it was obvious to me that was his intent, I have shopped in the store, and it is something he cleared up for you in a later comment.
My company works with the local Apple Authorized Retailer here in Monterrey, Mexico almost daily. We sell hundreds of Apple products for them every year to our clients. You are spewing a crock. We have phones unlocked every other week when there is insufficient unlocked stock available.
I have read the entire thread. I am well versed in what has been asserted and by whom. My reading comprehension in English is excellent. You are who has asserted that it was a mismarked AT&T phone. That is a tale that you fabricated out of thin air. You lot have turned a simple question about which company he was roaming with, into a farce claiming he purchased a hacked phone.