A method of operating an iris recognition function, and an electronic device thereof are provided. The electronic device includes a first camera device, a second camera device, and at least one processor operatively connected to the first camera device and the second camera device. The at least one processor is configured to, if an execution of an iris recognition function is requested, obtain a first image associated with a subject, based on the first camera device, and output information about a feature point of the obtained first image on a display, and if the information about the feature point satisfies a specified condition, obtain a second image associated with the subject based on the second camera device, and wherein a display location of the information about the feature point on the display is changed depending on a capture angle between the subject and the first camera device.