Mobile phone device

A mobile phone device, comprising:

• a display capable of switching a display state between a first display state and a second display state in which a display area is larger than a display area in the first display state;
• a communication circuit configured to execute a call between a first user of the mobile phone device and a second user who makes a call using another phone device;
• an image generation circuit configured to generate a first image indicating first information including a phone number of the another phone device based on identification information for identifying the another phone device, and generates a second image indicating second information related to the second user including information other than the first information based on the identification information;
• a detection circuit configured to detect a switch of the display state of the display from the first display state to the second display state, while the call is being executed by the communication circuit;
• and
• a display control circuit configured to, while the call is being executed by the communication circuit, cause the display to display the first image in a case where the display state of the display is the first display state, and in response to detection of the switch by the detection circuit, change the display state of the display to the second display state and cause the display to display the second image, wherein
• the image generation circuit is configured to generate the second image based on the identification information and call information indicating spoken words of the call in a case where the display state of the display is the first display state.