Parameter writing program on communication subscriber card

A mobile apparatus, comprising:

• a communication subscriber card port apparatus to be connected to a communication subscriber card;
• and
• a controller to transmit an administrative check instruction to the communication subscriber card via a card operation interface and encode at least a parameter into at least a first encoded parameter conforming to a first specific format of the communication subscriber card after the controller receives a check success message from the communication subscriber card via the card operation interface, so as to perform a parameter writing program on the communication subscriber card and write the first encoded parameter into the communication subscriber card,
• wherein the controller is further used to receive an original administrative check instruction from a host and convert the original administrative check instruction into the administrative check instruction via a debugging interface to transmit the administrative check instruction to the communication subscriber card via the card operation interface.