Display device and operating method of the same

Provided is a display device including: an inputter/outputter comprising circuitry configured to request a content providing device to provide content at a first resolution and receive a first image at the first resolution from the content providing device, a display configured to display the first image, a memory storing one or more instructions, and a processor configured to execute the one or more instructions stored in the memory to: change a resolution requested to the content providing device from the first resolution to a second resolution, control the display to receive a second image from the content providing device and display the received second image in response to the change of the requested resolution, determine whether an error occurs in the displayed second image, and change the requested resolution from the second resolution to the first resolution based on an error occurring in the second image.