Abstract: A portable telephone has a keypad, a screen and a plate under the keypad and including some of the electronic circuits of the telephone and contacts actuated by keys of the keypad to operate the telephone. An identity card is inserted in a cavity under the plate so as to place it in contact with an identity card connector located under the "navigator" key of the keypad on the opposite side of the plate to the identity card. The connections between the connector and the identity card are made by contacts carried by the connector through an opening in the plate. This saves space and reduces the thickness of the telephone.