6510 TroubleshootingIf you have trouble with your device, trythese procedures before you contact aservice professional.Contacting a service centerIf you have attempted thetroubleshooting solution and are stillhaving problems with your device, makea note of the following information andcontact your local dealer or Samsungafter-sales service:• Model number(s) of your device• Serial number(s) of your device• A clear description of the problemWhen contacting Samsung, use thecontact phone numbers, web addresses,or postal addresses for your region ofresidence.When you try to turn on your device,the following messages may appear:Message Try this to solve theproblem:The SIM cardis missing.Ensure that the SIM cardis installed correctly.Enter PIN. When using the device forthe first time or when thePIN requirement isenabled, you must enterthe PIN supplied with theSIM card. To disable thisfeature, tap Start →Settings → Personal tab→ Phone → Phone tab,and then clear theRequire PIN whenphone is used checkbox.
