An electrical connector including a body, an electrical contact and a microphone is provided. The body has a front part and a plug aperture on the front part. The electrical contact is disposed in the plug aperture. The microphone is disposed inside the body and connected to the outside of the body through an acoustic path provided by the body. The electrical connector is adapted to a handheld electronic device, such as a mobile phone, wherein a housing of the handheld electronic device can be provided without an independent sound input aperture for the microphone, to simplify the structural design of the housing. Furthermore, at least a through hole may be formed outside the plug aperture to form multiple acoustic paths.