Samsung SGH-D415MSATMB - Manual (Page 158)

Access Codes
155
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).
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, or you have lost it, contact your service provider.
To re-enable your PIN:
1. Enter the PUK and press the OK soft key.
2. Enter a new PIN of your choice and press the OK soft key.
3. When the Confirm New PIN message displays, enter
the same code again and press the OK soft key.
If you enter an incorrect PUK ten times in succession, the SIM
card becomes invalid. Contact your service provider for a new
card.
PIN2
The PIN2 (4 to 8 digits), supplied with some SIM cards, is
required to access specific functions, such as setting the
To See
activate/deactivate the PIN
Check feature “PIN Check” on page 121
(Menu 8.6.1).
change the PIN “Change PIN” on page 121
(Menu 8.6.2).