Q: Why do I get the error message Expired certificate or Certificate not validyet when I am installing a downloaded application?A: If Expired certificate or Certificate not valid yet is displayed, even if thecertificate should be valid, check that the current date and time in your device arecorrect. You may have skipped the setting of date and time when starting the devicefor the first time, or the mobile network may have failed to update these settingsto your device. To resolve this, select Menu > Settings and Phone > Phonemgmt. > Factory settings. Restore the factory settings, and when the devicerestarts, set the correct date and time.198 Troubleshooting© 2009 Nokia. All rights reserved.198
