A wireless device and a display control method in a wireless device are disclosed. The wireless device is capable of making a call to another wireless device of a call partner and includes a first coil configured to generate an induced electromotive force by linking with magnetic flux from an external second coil, a battery configured to be supplied and charged with a charging current by the induced electromotive force, a wireless communication unit configured to wirelessly communicate with the wireless device of the call partner, a display, and at least one processor configured to communicate with the wireless device of the call partner via the wireless communication unit to perform call-related processing, and when a call is made during charging using the induced electromotive force, display charging information on the display The charging information includes information regarding a reduction in the charging current during the call.