75troubleshootingIf you have trouble with your phone, try these procedures before you contact a service professional.While using your phone, thefollowing messages may appear:Ensure that the SIM card isinstalled correctly.When using the phone for thefirst time or when the PINrequirement is enabled, youmust enter the PIN supplied withthe SIM card. To disable thisfeature, press <Start> Settings Security Disable SIM PIN.Your SIM card is blocked,usually as a result of enteringyour PIN incorrectly severaltimes. You must enter the PUKsupplied by your serviceprovider.Your phone does not show a signal (nobars next to the network icon).• If you just turned on the phone, wait about 2minutes for your phone to find the networkand receive a signal.• You may not be able to receive a signal intunnels or elevators. Move to an open area.Message Try this to solve the problem:SIM FailureEnter SIMPINPUKRequiredMessage Try this to solve the problem:
