atroubleshootingIf you are having trouble with your mobile phone, try these troubleshooting procedures beforecontacting a service professional.While using your phone, the followingmessages may appear:Message Try this to solve the problem:Insert SIMcard toaccessnetworkservicesEnsure that the SIM or USIM cardis installed correctly.PasswordWhen the phone lock feature isenabled, you must enter thepassword you set for the phone.PIN codeWhen using the phone for thefirst time or when the PINrequirement is enabled, you mustenter the PIN supplied with theSIM or USIM card. You candisable this feature by using thePIN lock menu.PUK codeYour SIM or USIM card isblocked, usually as a result ofentering your PIN incorrectlyseveral times. You must enter thePUK supplied by your serviceprovider.Message Try this to solve the problem:
