Ericsson R380, Руководство пользователя

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6 General Information
GSM 900/1900 Dual Band
The Ericsson R380 is a dual band phone, which means that you
can use your phone in two different kinds of networks - the
GSM 900 and GSM 1900 systems.
The GSM 1900 system is used primarily in the US and other
parts of the Americas, and the GSM 900 system is used primarily
in Europe, the Asia/Pacific region and in some parts of Africa.
This means that you can used your R380 on six continents.
Switching between the two systems is done automatically, which
means that you can use your phone without ever having to
consider which system is being used. This is taken care of by the
networks. However, you should note that the functions offered
and the network coverage differ depending on your choice of
operator and/or subscription.
SIM and PIN
You will obtain a SIM (Subscriber Identity Module) card with
your subscription. The SIM card contains a computer chip that
keeps track of your phone number, the services you have ordered
from your network operator and your Phone Book information,
among other things.
Your SIM card is supplied with a security code or PIN (Personal
Identity Number), which you need in order to gain access to the
network. Your PIN may also be required when you want to
change settings in your phone. Furthermore, some operators
may have services that require a second PIN, your PIN2. You
will find your PIN (and PIN2) in the information from your
operator.
If you have set certain security options in your phone, when you
turn on your phone, it prompts you to enter your PIN. If the
PIN is entered incorrectly three times in a row, the SIM card will
be blocked. If this happens you can unlock it by using your PUK
(Personal Un-blocking Key code), which you also get from your
operator. You should be careful with your PIN, since it is your
protection against unauthorized use of your phone and
subscription.