Sim Card Lock; Keypad Lock - Sony Ericsson D750i User Manual

More features

SIM card lock

The SIM card lock protects your subscription,
but not your phone itself, from unauthorized use.
If you change SIM cards, your phone still works
with the new SIM card.
Most SIM cards are locked at the time of
purchase. If the SIM card lock is on, you have to
enter a PIN (Personal Identity Number) every time
you turn on your phone.
If you enter your PIN incorrectly three times in a
row, the SIM card is blocked. This is indicated by
the message PIN blocked. To unblock it, you need
to enter your PUK (Personal Unblocking Key).
Your PIN and PUK are supplied by your network
operator. You can edit your PIN and select a new
four- to eight-digit PIN.
Codes do not match
If the message
when you edit your PIN, you entered the new PIN
incorrectly. If the message
Old PIN:, you entered your
followed by
old PIN incorrectly.
78
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appears
Wrong PIN
appears,
To unblock your SIM card
1
PIN blocked
When is displayed, enter your
} OK.
PUK
2
Enter a new four- to eight-digit PIN
3
Re-enter the new PIN to confirm
To edit your PIN
1
} Settings } General
the
} SIM lock } Change
2
} OK.
Enter your PIN
3
Enter a new four- to eight-digit PIN
4
Re-enter the new PIN to confirm
To turn the SIM card lock on or off
1
} Settings } General
the
} SIM lock } Protection
or Off.
2
}
OK.
Enter your PIN

Keypad lock

You can lock the keypad to avoid dialling a number
by accident.
Calls to the international emergency number 112 can
still be made, even when the keypad is locked.
} OK.
} OK.
} Locks
tab
PIN.
} OK.
} OK.
} Locks
tab
On
and select