When you want to learn more about how to use your product or you are unsure how your device should function, see the support pages at www.nokia.com/support or your local Nokia website, www.nokia.mobi/support (with a mobile device), the Help application in the device, or the user guide.
If this does not resolve your issue, do one of the following:
Restart the device: switch off the device, and remove the battery. After about a minute, replace the battery, and switch on the device.
Restore the original factory settings as explained in the user guide. Your documents and files will be deleted in the reset, so back up your data first.
Update your device software regularly for optimum performance and possible new features, as explained in the user guide.
If your issue remains unsolved, contact Nokia for repair options. See www.nokia.com/repair. Before sending your device for repair, always back up the data in your device.