Communication system, communication terminal device, and information storage module

摘要

A UIM 12 stores a phone number of a user and authorization information for content owned by the user. A management device 14 stores correspondence information showing correspondence between a user and content owned by the user. When a content provider deletes from management device 14 correspondence information containing content to be disabled, authorization information corresponding to the content is deleted from UIM 12 . When a user deletes from UIM 12 authorization information for content which is no longer in use, correspondence information for the content is deleted from management device 14.