Security - Siemens C75 Operating Manual

Security

The phone and SIM card are protect-
ed against misuse by several security
codes.
Keep these confidential numbers in
a safe place where you can access them
again if required.
PIN codes
PIN
Protects your SIM card (per-
sonal identification number).
PIN2
This is needed to set the
charge detail display and to
access additional functions on
special SIM cards.
PUK
Key code. Used to unlock SIM
PUK2
cards after the wrong PIN has
been entered repeatedly.
Phone
Protects your phone. Must be
code
entered at the first security
setting.
¢ ¢
Security
T
C
¢
Select function.
PIN control
The PIN is usually requested each
time the phone is switched on. You
can deactivate this feature but you
risk unauthorised use of the phone.
Some service providers do not per-
mit deactivating the control.
Press this key.
§Change§
Enter PIN.
J
Confirm input.
C
Change PIN
You can change the PIN to any
4 to 8-digit number you find easier
to remember.
Press this key.
§Select§
Enter current PIN.
J
Confirm input.
C
Enter new PIN.
,
C
J
Re-enter new PIN.
,
C
J
Security
¢
PIN codes
13