These messages may be displayed in the following situations:
The SIM card is out of alignment. If the phone has recently been dropped, bumped, or opened, the SIM card may need adjusting. Follow the SIM card installation instructions in your user guide.
The PUK (Personal Unblocking Key) code is entered incorrectly multiple times. This can inactivate the SIM card. If inactivation appears to be permanent, contact your operator or service provider for a new SIM card.
You have recently changed service providers. In this case, either your SIM card or your phone may be configured for your previous operator and may require reconfiguring. It may also be that your phone is configured so that it cannot be used with a SIM card from a different operator or service provider. Please contact your current operator or service provider for assistance.
If none of the situations above apply and you continue to receive this error message, your SIM card may be damaged. Please contact your operator or service provider. Or alternately, contact your local Nokia Care Point for inspection.