[ 45 ]Manage phone securityThe PIN2 CodeThe PIN2 code is required for features such as Fixed dialing. If you enteran incorrect PIN2 code three times in succession, the PIN2 code is blockedand you’ll have to enter the PUK2 code.Note: The original PIN2 code must be obtained from yourwireless provider.CHANGE YOUR PIN2 CODE1 Press Menu 4-7-6-3 (Settings > Security settings > Access codes >Change PIN2 code). You’re prompted to enter the current PIN2 code.2 Enter the current PIN2 code and press OK. You’re prompted to enterthe new PIN2 code.3 Enter the new PIN2 code and press OK. You’re asked to verify the newPIN2 code by entering it again.4 Enter the new PIN2 code again and press OK. A message appears inthe display confirming you’ve changed the PIN2 code.Personal unblocking key (PUK) codesPUK and PUK2 codes are used to restore blocked PIN and PIN2 codes.Both PUK and PUK2 codes are eight characters in length and cannotbe changed. PUK and PUK2 codes must be obtained from yourwireless provider.Important: If you enter an incorrect PUK or PUK2 code 10 times insuccession, the message SIM rejected appears in the display andthe SIM card can no longer be used. You must contact your wirelessprovider for a new SIM card.Closed user groupsA closed user group is a network service that specifies the group of peoplewhom you can call and who can call you. For more information contactyour network operator or service provider.