A multi-functional display device having a channel scan interface and a method of controlling the same are disclosed herein. The method may include registering a first individual at the multi-functional display device to create an account that is associated with at least one first social network service (SNS) account for the first individual. A menu may be displayed for selecting among a plurality of channel scan modes for scanning channels of the multi-functional display device, including a channel scan mode for broadcast content and SNS content. For channel scan mode for SNS content, information for at least one second SNS account for a second individual associated with the at least one first SNS account may be retrieved, and a channel number assigned to the at least one second SNS account.