Question: what is the difference between ultra hd tv and smart tv?
Answer: 4K Ultra HD A 4K TV has an even higher resolution than an HDTV. Most current HDTVs have a resolution of 1920×1080 (number of pixels horizontally/vertically), which is often referred to as Full HD, while the resolution of older HDTVs is 1280×720. A 4K TV's resolution is 3840×2160, or 4 times the resolution of full HD.