115 TroubleshootingImportant Error MessagesThese are some of the most important error messages which may be displayed:Failed Roaming in the selected area is not allowed.Roaming with the selected network is not allowed.The network has detected an authentication failure because your SIM is not registered withthat network – contact your service provider.SIM blocked The SIM is blocked because one of the PIN/PIN2 unblocking keys (PUK/PUK2) has beenentered incorrectly ten times – contact your service provider.Insert SIM The phone has detected a problem with the SIM – switch the phone off and then back on; ifthe message is still displayed contact your service provider.Invalid SIM The SIM has failed one or more of the SIM personalisation checks – contact your serviceprovider.Function unavailable The selected feature is either not supported by the SIM or is not available with the currentsubscription – contact your service provider.PIN2 invalidated The PIN2 is blocked permanently because the wrong PUK2 has been entered ten times,services controlled by PIN2 cannot be used – contact your service provider.Message rejected.Storage fullorMessage rejected.SIM fullA message has been received but the message store is full – to receive messages, deletesome of the currently stored messages.Too many characters. The edited or newly created Contact number is too long for the SIM.