Samsung SGH-X426 User Manual (user Manual) (ver.1.0) (English) - Page 154
PIN, PUK, The 8-digit PUK
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PIN The Personal Identification Number or PIN (4 to 8 digits) protects your SIM card against unauthorized use. It is usually supplied with the SIM card. If you enter an incorrect PIN three times in succession, the code is disabled and cannot be used until you re-enable it by entering the PUK. See below. To activate/deactivate the PIN Check feature change the PIN See "PIN Check" on page 154 "Change PIN" on page 154. PUK The 8-digit PUK (PIN Unblocking Key) is required to change a disabled PIN. The PUK may be supplied with the SIM card. If not, contact your service provider. To re-enable your PIN: 1. Enter the PUK and press the OK soft key or key. 2. Enter a PIN of your choice and press the OK soft key or key. 3. When the Confirm New PIN message displays, enter the same code again and press the OK soft key or key. When you enter an incorrect PUK ten times in succession, the SIM card becomes invalid. Contact your service provider for a new card. Access Codes 150