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 SIMcard toaccessnetworkservicesEnsure that the SIM or USIM card isinstalled correctly.Phone lockWhen the phone lock feature isenabled, you must enter the passwordyou set for the phone.PIN codeWhen using the phone for the first timeor when the PIN requirement isenabled, you must enter the PINsupplied with the SIM or USIM card.You can disable this feature by usingthe PIN lock menu.PUK codeYour SIM or USIM card is blocked,usually as a result of entering your PINincorrectly several times. You mustenter the PUK supplied by yourservice provider.Message Try this to solve the problem:
