Foldable portable telephone using one of the shieldings as a second antenna

A portable telephone is disclosed which comprises the following components: a first electronic circuit portion (15); a second electronic circuit portion (11 - 13); a substrate (10) including a ground layer (10d) and having the second electronic circuit portion (11 - 13) mounted thereon; a shield member (14) including a shield layer (3a), the shield layer (3a) being formed of a conductive member, shielding the second electronic circuit portion (11 - 13) on the substrate (10), and in electrical conduction with the ground layer (10d) of the substrate (10); a communication circuit (15) constituting an electronic part included in the first electronic portion and electrically connected to the ground layer (10d); and a conduction member (9) electrically connecting the communication circuit (15) to the ground layer (10d).