A device and a method of managing user information are provided. The device includes a display and a controller. The controller controls the display to display an avatar-based image according to user schedule information, change the avatar-based image according to a user input indicating a request to change the avatar-based image, and update the user schedule information according to the changed avatar-based image. The method includes displaying, on a display of a device, an avatar-based image according to user schedule information, changing the avatar-based image according to a user input indicating a request to change the avatar-based image, and updating the user schedule information according to the changed avatar-based image.