User's Manual

82 Security
Security
SIM card lock
The SIM card lock protects your subscription, but
not your phone itself, from unauthorized use. If you
change SIM cards, the phone still works with the
new SIM card.
Most SIM cards are locked at the time of purchase.
If the SIM card lock is on, you have to enter a “PIN”
(Personal Identity Number) every time you turn on
your phone.
If you enter your PIN incorrectly three times in a
row, the SIM card is blocked. This is indicated by
the message PIN Blocked. To unblock it you need to
enter your “PUK” (Personal Unblocking Key). Your
PIN and PUK are supplied by your operator.
To unblock your SIM card
1. PIN Blocked appears in the display.
2. Enter your PUK and press
Ok.
3. Enter a new four- to eight-digit PIN and press
Ok.
4. Re-enter the new PIN to confirm and press
Ok.
• To edit your PIN, scroll to Settings, Locks, SIM
Lock, Change PIN.
Note: If the message “Codes do not match”
appears, you entered the new PIN incorrectly. If the
message “Wrong PIN” appears, followed by “Old
PIN:”, you entered your old PIN incorrectly.
• To edit your PIN2, scroll to Settings, Locks, SIM
Lock, Change PIN2.
To turn the SIM card lock on or off
1. Scroll to Settings, Locks, SIM Lock,
Protection.
2. Select On or Off.
3. Enter your PIN and press
Ok.
Phone lock
The phone lock protects the phone against
unauthorized use if it is stolen and the SIM card is
exchanged. It is not on when you buy the phone. You
can change the phone lock code (0000) to any four-
to eight-digit personal code. The phone lock can be
set to on, automatic or off.
T637UG.book Page 82 Friday, January 9, 2004 10:46 AM