a method for preventing fraud or misuse when a user equipment uses a service of a public land mobile network . the user equipment includes a subscriber identity module , the subscriber identity module includes address information used for the service of the public land mobile network . the subscriber identity module includes an application program . the application program includes reference address information . the method includes : determining , by the application program of the subscriber identity module of the user equipment , that the address information does not correspond to the reference address information ; and in response to the determining : blocking , by the application program , the service for the user equipment and sending an error message to the public land mobile network ; or invoking , by the application program , the service for the user equipment using the reference address information .