how do i unlock an at&t samsung SGH-A707?

i dont have the original sim card and i need it to work with a t-mobile sim card

Patrick O'Banahan said:

i dont have the original sim card and i need it to work with a t-mobile sim card

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Hi you can easily unlock your samsung sgh-a707 by using unlock code. If you need unlock code you can visit this site Mobileunlocksolutions.com here you can get the unlock code and unlock your samsung sgh-a707 mobile.After unlock your mobile you can use it t-mobile sim card and any other sim card.