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Glossary of Terms
PUK PIN or PIN2 Unblocking Key. Used to unblock the PIN or
PIN2 code. Supplied by your service provider. If the PUK
or PUK2 is entered incorrectly 10 times, the PUK or PUK2
will be blocked.
PUK2
Roaming The ability to use your phone on networks other than your
home network.
SDN Service Dialling Number. This number enables you to
access special services provided by your network
operator, such as customer support, emergency services,
etc.
Service
provider
The organisation responsible for providing
supplementary services and applications to phones.
SIM Subscriber Identity Module. A small smart-card which
stores unique subscriber and user-entered information
such as Contacts entries and SMS messages. Supplied
by your service provider.
SMS Short Message Service. A basic mail system used for
cellular phones. This service allows sending/receiving of
short text messages.
STK SIM Tool Kit. Supplied by your service provider. It is
included in the SIM to offer value-added services.
WAP Wireless Application Protocol. The communication
standard which enables you to download resources from
the Internet to your phone.