Samsung SGH-E316CSAAWS - Manual (Page 164)

Access Codes
160
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.
To See
activate/deactivate the PIN
Check feature
page 120 (Menu 6.5.1).
change the PIN page 120 (Menu 6.5.2).