To find out which demonstrates and movies are 4K, you will need to pull up the Hulu listing for This system and try to look for a little badge that says “4K” or “UHD.” To watch 4K material with Sling, you’ll initially have to have a TV with 4K capabilities. https://how-to-stream-in-4k-on-yo13568.answerblogs.com/33897440/little-known-facts-about-stream-in-4k