Sony Ericsson T18 User Guide - Page 48
The SIM Card Lock, Unblocking Your SIM Card, Changing PIN, PIN Blocked. Unblock?, Access, Card Lock
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PIN Blocked. Unblock? Enter old PIN THE SIM CARD LOCK The SIM card lock only protects your subscription and not your phone itself from unauthorized use. If you change SIM card, the phone still works with the new SIM card. Some SIM cards are protected with a PIN (Personal Identity Number) at the time of purchase. If the SIM card lock is activated, you have to enter the PIN 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. Unblock? If this happens you need to unlock it to access your subscription. Unblocking Your SIM Card 1. Press Y ES . 2. Enter your PUK (or PUK2) which you will find in the information from your network operator. 3. Enter a new four- to eight-digit PIN (or PIN2). 4. Press Y ES . 5. Re-enter the new PIN (or PIN2) to confirm. 6. Press Y ES . Note! If you enter the wrong PUK ten times in a row, your card is permanently blocked. If this happens, you should contact your network operator. Changing PIN 1. Scroll to Access, YE S, Card Lock, YE S, Change PIN code, Y ES . 2. Enter your old (current) PIN and press YE S. 3. Enter your new PIN and press YE S . The phone asks you to repeat the PIN. 4. Enter your new PIN a second time and press YE S . The PIN is now changed. Note! If the message Matching error appears, this means you entered the new PIN incorrectly. If the message Wrong PIN appears, followed by Enter Old PIN, you entered your old PIN incorrectly. Changing PIN 2 1. Scroll to Access, YE S, Card Lock, YE S, Change PIN2 code, YE S . 2. Follow the same procedure as described in "Changing PIN" above. 48 Security for Your Phone and Subscription