Drnc Holdings, Inc.

Ipg Electronics 504 Limited

Thierry Dupuis

Alain Guirauton

A method of unlocking a mobile terminal and a mobile terminal is disclosed. The mobile terminal is initially locked to the services of a mobile services provider. The mobile services provider transmits to a predefined telephone number associated with a service provider other than the mobile services provider, via the mobile services provider, a request for unlocking information. The request is transparent to the mobile services provider. If the request is approved, the mobile terminal receives the unlocking information. Using the received unlocking information, the mobile terminal unlocks itself so that it is no longer locked to the services of the mobile services provider. If the request is not approved, the mobile terminal receives and displays a message indicating that the request is not approved.

Method and apparatus for unlocking a mobile telephone type wireless communication terminal

In a method of unlocking mobile telephones, in particular one using the 'SIM-LOCK' method, the user of the telephone submits an unlocking request directly to the manufacturer of the telephone and the manufacturer sends unlocking information to the telephone after verifying with the operator that the user is entitled to unlocking. This simplifies the administration of unlocking requests and makes it more reliable.

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Rueil, France

Thierry Dupuis