Samsung SGH-A637CWAATT User Manual
Page 83
 
Changing Your Settings 80
number will prevent you from making or receiving calls on the 
handset. You may also add other names and numbers into your phone 
for easy referral. 
•
Security: The Security feature enables you to restrict the use of your
phone by the others and to restrict the types of calls. Various codes 
and passwords are used to protect the features of your phone. The 
following options are available. Use the Up or Down Navigation key to 
scroll to and set options.
–
Lock Phone: when the Lock Phone feature is enabled, the phone is 
locked and you must enter the 4- to 8-digit phone password each time 
the phone is switched on. To change the phone password, see Change 
Phone Password on page 81. Once the correct password has been 
entered, you can use the phone until you switch it off. The following 
options are available:
• Off: you are not asked to enter the phone password when you
switch on the phone.
• On: you are required to enter the phone password when you switch
on the phone.
–
Lock SIM Card: when the Lock SIM Card feature is enabled, your phone 
only works with the current SIM. You must enter the lock code to unlock 
the SIM so you can use a different SIM card. Once you have entered the 
lock code, you are asked to confirm your password. Reenter your 
password and press the OK soft key.
–
Check PIN Code: when the Check PIN Code feature is enabled, you 
must enter your PIN each time you switch on the phone. Consequently, 
any person who does not have your PIN cannot use your phone without 
your approval. The following options are available:
• Off: the phone connects directly to the network when you switch it
on.
• On: you must enter the PIN each time the phone is switched on.
Note: Before disabling the Check PIN Code feature, you must enter your PIN.
–
Lock Applications: using this option you can lock various applications. 
Once you have locked the contents, you must enter the phone’s 
password to access the associated menus. The applications options 
are:
• All
• IM
• Messaging
• Recent Calls
• My Stuff
• Calendar
• Tasks
• Notes
• Address Book
–
Set FDN Mode: FDN (Fixed Dial Number) mode, if supported by your SIM 
card, allows you to restrict the outgoing calls to a limited set of phone 
numbers. The following options are available: