Nokia X6-00 User Guide - Page 176

176 Settings Delete a server profile Select Options > Delete. Security settings Phone and SIM Select Menu > Settings and Phone > Phone mgmt. > Security > Phone and SIM card. Select from the following: PIN code request - When active, the code is requested each time the device is switched on. Deactivating the PIN code request may not be allowed by some SIM cards. PIN code and PIN2 code - Change the PIN and PIN2 code. These codes can only include numbers. Avoid using access codes similar to the emergency numbers to prevent accidental dialing of the emergency number. If you forget the PIN or PIN2 code, contact your service provider. If you forget the lock code, contact a Nokia Care point or your service provider. Lock code - The lock code is used to unlock the device. To avoid unauthorised use of your device, change the lock code. The preset code is 12345. The new code can be 4-255 characters long. Alphanumeric characters and both uppercase and lowercase characters can be used. The device notifies you if the lock code is not properly formatted. Keep the new code secret and separate from your device. Phone autolock period - To avoid unauthorized use, you can set a time-out after which the device automatically locks. A locked device cannot be used until the correct lock code is entered. To turn off autolock, select None. Lock if SIM card changed - Set the device to ask for the lock code when an unknown SIM card is inserted into your device. The device maintains a list of SIM cards that are recognized as the owner's cards. Remote phone locking - Enable or disable remote lock. Closed user group - Specify a group of people to whom you can call and who can call you (network service).