Apparatus for connecting mobile phone and peripheral unit

A device for connecting a mobile phone to an external device is provided to charge a battery, transmit data to the external device and connect an ear-microphone using an interface connector. A device for connecting a mobile phone to an external device includes a cable(100), an interface connector(110), and a controller(120). The interface connector is located at one end of the cable and combined with an interface terminal included in the mobile phone. The controller is located at the other end of the cable and includes a USB(Universal Serial Bus) jack(121) connected to the external device. The controller includes a plurality of keys and a remote circuit for controlling the mobile phone.