To provide a configuration of a mobile phone in common use of a flashlight that can illuminate a subject in the dark and can be conveniently in use as the mobile phone.

The mobile phone in common use with a flashlight is configured such that an illumination electric bulb 1 is connected by a wiring to an anode and a cathode of a battery provided in the mobile phone 2, a switch 3 can freely turn ON/OFF the bulb 1, the electric bulb 1 can light up a front direction of the mobile phone 2 that is a direction in which at least part of the mobile phone 2 is pressed into contact with the ear of user in a way that the user can illuminate a subject in the dark, light up a pushbutton 21 or make communication while referencing a book or reference data 8.