Dear Roman,

Thank you for contacting AT&T Customer Care about unlocking your iPhone. My name is Kristal Brooks and I am happy to assist you.

Due to security restrictions based on the device's history, the unlock code for this device is unavailable. You may want to return the device and/or provide feedback to the seller.

Roman, should you have additional concerns or questions about this issue please reply to this email. If you need to contact us again regarding a new issue please send us a new e-mail. Again, my name is Kristal Brooks and we thank you for contacting AT&T Mobility.