Sony Ericsson R306a, Руководство пользователя

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SIM and PIN
SIM card
The SIM (Subscriber Identity Module) card, which you
get from your network operator, contains information
about your subscription. Always turn off your phone
and detach the charger before you insert or remove
the SIM card.
PIN code
You may need a PIN (Personal Identification Number) to
activate the services in your phone. Your PIN is supplied by
your network operator. Each PIN digit appears as *, unless it
starts with emergency number digits, for example, 112 or 911.
You can call an emergency number without entering a PIN.
You can save contacts on the SIM card before removing
it from your phone. Contacts may also be saved in the
phone memory. See Contacts on page 14.
If you enter the wrong PIN three times in a row, this message
displays,
PIN blocked. To unblock, enter your PUK code
provided by your network operator. To unblock it, you need
to enter your PUK (Personal Unblocking Key).