1. A portable device supporting an execution of a fast association function of a camera, the portable device comprising: a camera configured to capture an image; a display panel; and a controller configured to: activate, when the camera captures the image, the fast association function of the camera, the fast association function of the camera being a specific user function which is preset to be automatically activated without a user's input when the camera captures the image; activate a radio frequency unit for sending the captured image; and control the display panel to display a screen for sending the captured image to at least one other portable device on the display panel based on the specific user function, wherein the specific user function is a photo transfer function, and wherein the displayed screen is a telephone number entry screen allowing a user to enter a telephone number, such that the captured image is sent to the at least one other portable device based on the entered telephone number.