Siemens ST55 - Manual (Page 13)

General instructions
12
ST55 en retail, A31008-H6850-A101-1-7619 (8. August 2003, 14:18)
©
Siem
ens AG 2001
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Menu speed dialling
All menu functions are numbered
internally. A function may be
selected directly by entering these
numbers in sequence.
E.g., write new SMS (from standby
mode):
C
Press for menu view.
4
for Messages
1
for SMS
1
for New SMS
Codes
The phone and SIM card are
protected against misuse by several
security codes.
C
MSettingsMSecurity MCodes
M 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
permit deactivating the control.
Keep these confidential numbers in a
safe place where you can access
them again if required.
PIN Protects your SIM card
(personal identification
number).
PIN2 For setting the charge detail
display and to access additional
functions on special SIM cards.
PUK
PUK2
Key code for unlocking SIM
cards after the wrong PIN has
been entered repeatedly.
Phone
code
Protects your phone. Must be
entered at the first security
setting.