Security, Codes – Siemens MT50 User Manual
Page 12
Security
10
MT50 english, A31008-H5120-A1-1-7619 (4. März 2002, 10:58)
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Security
The phone and SIM card are protect-
ed against misuse by several security
codes.
§Menu
¢
Setup
¢
Security
¢
then select a function
Codes
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.
§Select§
Press.
J
Enter PIN.
§OK§
Confirm input.
§Change§
Press.
§OK§
Confirm.
Some service providers do not per-
mit this function.
Change PIN
You can change the PIN to any
4-8 digit number you may find easier
to remember.
J
Enter old PIN.
§OK§
Press.
J
,
§OK§
Enter new PIN.
J
,
§OK§
Repeat new PIN.
Change PIN2
(display only if PIN 2 is available).
Proceed as with
Change PIN
.
Keep these confidential numbers in a
safe place where you can access them
again if required.
PIN
Protects your SIM card (person-
al identification number).
PIN2
This is needed to set the charge
detail display and to access
additional functions on special
SIM cards.
PUK
PUK2
Key code. Used to unlocked
SIM cards after the wrong PIN
has been entered.
Phone
code
Protects your phone. Must be
entered at the first security set-
ting.