Abstract: A mobile phone having a USB interface and including a main body and a battery pack removably mounted to the main body is provided. The mobile phone includes a USB connector that may be connected to an external device to allow data transmission between the external device and the mobile phone; a holding unit for containing the USB connector and from which the USB connector may be withdrawn; and a housing mounted in the mobile phone and including a flash memory for storing data, and a controller for controlling a data signal of the flash memory through the USB connector.