• Certificate not trusted — You have not set any application to use the certificate. You may want to change the trust settings.• Expired certificate — The period of validity has ended for the selected certificate.• Certificate not valid yet — The period of validity has not yet begun for the selected certificate.• Certificate corrupted — The certificate cannot be used. Contact the certificate issuer.Security modulesSelect > Tools > Settings > General > Security > Security module.To view or edit a security module, scroll to it, and press the scroll key.To view detailed information about a security module, select Options > Security details.The key store contains the contents of the security module. To delete the key store, select Key store, select the desired key store,and Options > Delete. You may not be able to delete the key store of all security modules.Security module codesSelect > Tools > Settings > General > Security > Security module.To edit the PIN codes for the security module, select Module PIN to edit the PIN code for the security module or Signing PIN toedit the PIN code for digital signatures. You may not be able to change these codes for all security modules.To view detailed information about the security module, select Options > Security details.Memory card securitySelect > Tools > Memory.You can protect a memory card with a password to prevent unauthorized access. To set a password, select Options > Setpassword. The password can be up to eight characters long and is case-sensitive. The password is stored in your device. You donot need to enter it again while you use the memory card on the same device. If you use the memory card on another device,you are asked for the password. Not all memory cards support password protection.To remove the memory card password, select Options > Remove password. When you remove the password, the data on thememory card is not protected against unauthorized use.To open a locked memory card, select Options > Unlock memory card. Enter the password.If you cannot recall the password to unlock a locked memory card, you may reformat the card, in which case the card is unlockedand password removed. Formatting a memory card destroys all data stored on the card.Lock the deviceWhen the device is locked, calls may be possible to the official emergency number programmed into your device.To prevent access to the contents of your device, lock the device in the standby mode. Press the power key, select Lock phone,and enter your lock code. The default lock code is 12345. To unlock, press the left selection key, enter your lock code, and pressthe scroll key.You can also lock the device remotely by sending a text message to the device. To enable remote locking and to define the textfor the message, select > Tools > Settings > General > Security > Phone and SIM card > Allow remote lock > Yes. Enterthe remote lock message and confirm the message. The message must be at least 5 characters long.To change the lock code, select > Tools > Settings > General > Security > Phone and SIM card > Lock code. Enter the oldcode and then the new code twice. The new code can be 4-255 characters long. Both alphabets and digits can be used, and bothuppercase and lowercase alphabets are possible.S e c u r i t y© 2007 Nokia. All rights reserved. 77