Sony Ericsson T310, User Manual

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Security 71
Security
SIM card lock
The SIM card lock protects your subscription, but
not your phone itself, from unauthorized use. If you
change SIM cards, the 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.
As you enter your PIN, the digits are hidden with
an *. However digits are shown if your PIN starts with
the same digits as an emergency number, for example
112. This is so that you can see and call an emergency
number without entering a PIN. See “Emergency calls”
on page 26 for more information.
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 operator.
To unblock your SIM card
1. PIN blocked appears.
2.
Enter your PUK and press
YES
.
3. Enter a new four- to eight-digit PIN and press YES .
4.
Re-enter the new PIN to confirm and press
YES
.
To edit your PIN
• Scroll to Settings , YES , Locks , YES , SIM lock , YES ,
Change PIN,
YES
.
Note:
If the message “Codes do not match” appears,
you entered the new PIN incorrectly. If the message
“Wrong PIN” appears, followed by “Old PIN:”, you
entered your old PIN incorrectly.
PIN2
Certain services are protected by a second PIN.
To edit your PIN2
• Scroll to Settings , YES , Locks , YES , SIM lock , YES ,
Change PIN2 ,
YES
.