Samsung SGH-X105NBATMB User Manual
Page 77
 
Glossary
148
PUK (PIN Unblocking Key)
Security code used to unlock the phone when an 
incorrect PIN has been entered three times in 
succession. The eight-digit number is supplied by 
the service provider with the SIM card.
Roaming
Use of your phone when you are outside your home 
area (when traveling for example).
SDN (Service Dialing Numbers)
Telephone numbers supplied by your service 
provider and giving access to special services, such 
as voice mail, directory inquiries, customer support 
and emergency services.
SIM (Subscriber Identification Module)
Card containing a chip with all the information 
required to operate the phone (network and 
memory information, as well as the subscriber’s 
personal data). The SIM card fits into a small slot 
on the back of the phone and is protected by the 
battery.
SMS (Short Message Service)
Network service sending and receiving messages to 
and from another subscriber without having to 
speak to the correspondent. The message created 
or received can be displayed, received, edited or 
sent.
Glossary
149
Soft Keys
Two keys marked
and on the phone, the
purpose of which:
• varies according to the function that you are
currently using.
• is indicated on the bottom line of the display just
above the corresponding key.
Voice Mail
Computerized answering service that automatically 
answers your calls when you are not available, 
plays a greeting (optionally in your own voice) and 
records a message.
X105.book Pages 148 - 149 Saturday, February 7, 2004 9:34 AM