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Sim card lock, Keypad lock – Sony Ericsson D750i User Manual

Page 78

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78

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.

To unblock your SIM card

1

When

PIN blocked

is displayed, enter your

PUK

}

OK

.

2

Enter a new four- to eight-digit PIN

}

OK

.

3

Re-enter the new PIN to confirm

}

OK

.

To edit your PIN

1 }

Settings

}

the

General

tab

}

Locks

}

SIM lock

}

Change PIN

.

2

Enter your PIN

}

OK

.

3

Enter a new four- to eight-digit PIN

}

OK

.

4

Re-enter the new PIN to confirm

}

OK

.

To turn the SIM card lock on or off

1 }

Settings

}

the

General

tab

}

Locks

}

SIM lock

}

Protection

and select

On

or

Off

.

2

Enter your PIN

}

OK

.

Keypad lock

You can lock the keypad to avoid dialling a number
by accident.

If the message

Codes do not match

appears

when you edit your PIN, you entered the new PIN
incorrectly. If the message

Wrong PIN

appears,

followed by

Old PIN:

, you entered your

old PIN incorrectly.

Calls to the international emergency number 112 can
still be made, even when the keypad is locked.