33PIN codeerrorEnter incorrect PINcodes for three timesin succession.Contact your networkservice provider.Failed tocharge thebatteryThe battery or thecharger is damaged.Change a new batteryor charger.Charge the batterywhen ambienttemperature is lowerthan -10℃ or above55℃.Change theenvironment.Poor connection. Check whether theplug is properlyconnected.Failed to addcontacts tophonebookThe storage space ofphonebook is usedup.Delete some contactsfrom the phonebook.Failed to setup somefeaturesYour network serviceprovider does notprovide the services,or you haven’tsubscribed them.Contact your networkservice provider.