Provided is an image display apparatus including: a communicator configured to receive, from a server, information about an integrated frequency band corresponding to a region where the image display apparatus is located; a display; a processor; a memory; and at least one program stored in the memory and executed by the processor, wherein the at least one program comprises instructions for scanning channels included in the integrated frequency band for a channel receivable by the image display apparatus, and displaying a result of the scanning on the display, and the integrated frequency band is a frequency band determined based on frequency bands receivable by other image display apparatuses located in the same region as the image display apparatus.