摘要 |
A method of customising a mobile station in a mobile telecommunications system. A portable authentication module (34) is provided for insertion into the mobile station (8), the authentication module comprising a function for authenticating a subscriber in the mobile telecommunications system when the authentication module is inserted in the mobile station. The authentication module further includes one or more software applications (48, 50) for customising the mobile station. The one or more customising software applications are transferred onto the mobile station in response to insertion of the authentication module into the mobile station, and then activated, in order to customise the mobile station. |