User's Manual

Appendix 315
Roaming
A service that allows you to use a network provided by another
telecommunications carrier when you are out of the service area of your
home network.
Security Code
A number required for using the functions of your phone. The initial
security code is “0000” or the four-digit number you selected when
you concluded your contract.
Service Provider
A company that provides services for mobile phone users.
SIM
Subscriber Identity Module. A smart card that stores subscriber
information. Use your phone with the card inserted. The SIM card is
provided by your service provider.
SMS
Short Message Service. This service allows short text messages to be
exchanged.