Comvik Gsm Ab

Tomas Julin

Leif Sandberg

Bjorn Almgren

An apparatus and a method for providing at least two identities to a subscriber unit of a mobile telephone system. A subscriber identity module (SIM) is provided which is inserted into the subscriber unit for selectively activating an identity. The module may be activated through a keypad on the subscriber unit allowing a subscriber to enter a code for selecting a specific identity, or it may be a card having a separate program circuit on either end so that when inserted into the unit with its first end, a first identity is activated, and when inserted into the unit with its second end, a second identity is activated. Each selected identity may be allocated a separate directory number or all identities may be allocated a single number.

Method in mobile telephone systems in which a subscriber identity module (SIM) is allocated at least two identities which are selectively activated by the user

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Stockholm, Sweden

Tomas Julin