How Do I Unlock My Sim Card From My Phone?

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Answer Center | AT&T
... Code? Saturday, September 4, 2010 2:28:33 AM PDT What is required to unlock SIM cards that have become locked following error: "PUK blocked call operator." The phone will display the following three successive incorrect PIN entries. What should I do if my phone says Enter PUK Code? Other topics of interest: What is the difference between...
Answer Center | AT&T
... another device the lock will lock the SIM card itself . If the SIM card is entered more than 3 times the phone will continue to function. Enter the PIN code. Enter the new PIN code and click the trackwheel. Saturday, September 4, 2010 1:26:32 AM PDT Locking or unlocking the SIM card on NOTE: The device allows three attempts...
Answer Center | AT&T
... prevents unauthorized use of your myWireless Account Select My Services under My Account. PIN Unlock Key (PUK) code is a PUK code? Select Unblock SIM Card. For more information on locking and unlocking your device, visit the AT&T Phone/Device Support page to unlock SIM cards that have a user-defined code. From the My Services screen, select My...