Method of establishing links between contact information according to data validity of elementary files stored in smartcards

摘要

During the booting process of a mobile device inserted with a smartcard, it is determined whether a link indicated by an index administration phone book elementary file is correct according to data validity of the index administration phone book elementary file and an abbreviated dialing number elementary file. When a valid pointer indicated by index administration phone book elementary file corresponds to invalid data of the index administration phone book elementary file, the index administration phone book elementary file is updated to indicate an invalid pointer, thereby preventing the mobile device from displaying blank contact information.

主权项

1. A method of establishing links between contact information according to data validity of elementary files in a smartcard, comprising:
inserting the smartcard into a mobile device; accessing a first record in a first elementary file of the smartcard during a booting process of the mobile device; accessing a corresponding second record in a second elementary file of the smartcard according to a valid pointer when a content of the first record corresponds to the valid pointer; updating the first elementary file so that the content of the first record corresponds to an invalid pointer when a content of the second record corresponds to invalid data, wherein:
the first elementary file includes at least one pointer for linking a specific record in a third elementary file of the smartcard to a specific record in the second elementary file;the second elementary file is used for storing a first entry associated with a contact; andthe third elementary file is used for storing a second entry associated with the contact.