atroubleshootingIf you are having trouble with your mobile phone, try these troubleshooting procedures before contacting a serviceprofessional.While using your phone, the following messagesmay appear:Message Try this to solve the problem:Insert SIM Ensure that the SIM or USIM cardis installed correctly.Phone lockWhen the phone lock feature isenabled, you must enter thepassword you set for the phone.PIN lockWhen using the phone for the firsttime or when the PIN requirementis enabled, you must enter the PINsupplied with the SIM or USIMcard. You can disable this featureby using the PIN lock menu.PUK lockYour SIM or USIM card is blocked,usually as a result of entering yourPIN incorrectly several times. Youmust enter the PUK supplied byyour service provider.Message Try this to solve the problem:
