Nokia X6-00 User Guide - Page 187

Product and safety information 187 If this does not help, switch the device off and then on again. Q: Can I use my Nokia device as a fax modem with a compatible PC? A: You cannot use your device as a fax modem. However, with call diverting (network service), you can divert incoming fax calls to a fax number. Q: Why do I get the error message Expired certificate or Certificate not valid yet when I am installing a downloaded application? A: If Expired certificate or Certificate not valid yet is displayed, even if the certificate should be valid, check that the current date and time in your device are correct. You may have skipped the setting of date and time when starting the device for the first time, or the mobile network may have failed to update these settings to your device. To resolve this, select Menu > Settings and Phone > Phone mgmt. > Factory settings. Restore the factory settings, and when the device restarts, set the correct date and time. Product and safety information Accessories Warning: Use only batteries, chargers, and accessories approved by Nokia for use with this particular model. The use of any other types may invalidate any approval or guarantee, and may be dangerous. In particular, use of unapproved chargers or batteries may present a risk of fire, explosion, leakage, or other hazard. For availability of approved accessories, please check with your dealer. When you disconnect the power cord of any accessory, grasp and pull the plug, not the cord.