User's Manual

79
More features
To use the calculator
} Organizer }Calculator.
• Press or to select ÷ x - + . % =
• Press to delete the figure.
• Press to enter a decimal point.
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.
Some 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 service
provider.
To unblock your SIM card
1 When PIN Blocked is displayed, enter your
PUK } OK.
2 Enter a new four- to eight-digit PIN } OK.
3 Re-enter the new PIN to confirm } OK.
To edit your PIN
} Settings } the General tab } Locks } SIM Lock }
Change PIN.
To turn the SIM card lock on or off
1 } Settings } the General tab } Locks } SIM
Lock } Protection and select On or Off.
2 Enter your PIN } 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.
Phone lock on
If the phone lock is on, the message Phone Locked
appears each time you turn on the phone. You have
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.
Z500a_UG_R1A.book Page 79 Friday, August 13, 2004 1:41 PM