Its a marriage made in heaven: the visual effects driven spectacle of Disney Plus blockbusters Avengers: Endgame, Star Wars: The Force Awakens, Frozen with a picture quality that packs four times more pixels on your screen than HD TV. It can only be Disney Plus in 4K.(Image credit: Disney)Want to sign up to the House of Mouse's very own streaming service? Get comfy in front of the TV and watch Animations, Pixar movies, Disney Plus originals, as well as The Simpsons and documentaries by National Geographic.Disney Plus packages: $7.99/£7.99/AUS£11.99 a month or $79.99/£79.90/AUS$119.99 a yearUS customer exclusive: Get Disney Plus, Hulu and ESPN+ bundled together for $13.99 a month.Sign up to Disney Plus today and save on annual plansDisney Plus currently offers over 100 titles in 4K, from iconic classics (The Lion King, X-Men) to modern favorites and Original series. And, as 4K becomes an integral feature of smart TVs, supported by myriad media streaming devices, well only see the amount of Disney Plus 4K content increase.Below well explain whats required to get the best viewing experience from Disney Plus, which devices are able to stream Disney Plus 4K, and the type of content you can expect to dazzle your eyeballs.Is Disney Plus in 4K?Yes! And no...There are about 900 films and 300 TV series available to stream. While the majority of them are only available in HD, there are 100-odd titles ready to stream in glorious 4K UHD (Ultra High Definition).Thats a tenth of the Disney Plus catalogue. A lean amount, perhaps. But it includes the content most befitting of enhanced picture quality, with 4K resolution (3840 x 2160) bringing four times more pixels to the screen than a HD (1920 x 1080) TV.Everything Pixar related is ready to roll in 4K, from Toy Story to the award-winning Soul. Then theres the intergalactic mayhem of the Marvel Cinematic Universe, in addition to all Disney Original series like The Mandalorian and the entire Star Wars saga with the razor-sharp detail of 4K making a galaxy far, far away feel that much closer.With a quick search under Movies for “Ultra HD and HDR” content, youll find dozens of other titles in 4K too, like Disneys The Jungle Book, teen rom-com 10 Things I Hate About You, and Yuletide classic The Muppet Christmas Carol.To stream in 4K, youll need a subscription check out the Disney Plus price guide here and, as we explain in more detail below, a compatible smart TV with the Disney Plus app or a connected media streaming device.And, if you're in the market for one, you can also check out our current top ten list of the best 4K TVs for 2021.(Image credit: Disney)How do I turn on 4K on Disney Plus?Luckily you shouldnt even have to, because, if your hardware is capable of playing 4K Ultra HD and if the film or TV series is available in 4K Disney Plus will automatically start streaming in the highest resolution possible. Thats the magic of Disney right there!But, if your Disney Plus settings arent updating correctly, or you just want to prevent yourself from unwittingly consuming huge amounts of data, you can manually adjust your video playback settings, as below:Open the Disney Plus appSelect your ProfileSelect App SettingsUnder Video Playback, select ‘Mobile Data Usage: you can use either the Automatic (best video available) option, or ‘Save Data, which will stream at lower quality but use less data.Its also possible to toggle the ‘Stream over Wi-Fi only option right, so you dont automatically use data when you lose a Wi-Fi connection.Under ‘Downloads, you can alter ‘Video quality for downloaded TV episodes or films from ‘High (slowest option, takes up most device space), to ‘Medium or 'Standard' (the fastest option requiring the least storage).As already mentioned, there are over 100 Disney Plus 4K titles but no definitive list of them all. If youre not sure whether your favorites can be played in this format, simply click on the title and take a peek under the ‘Details tab. It should state ‘4K Ultra HD if so, along with other compatible viewing and audio options, like HDR (High Dynamic Range) and Dolby Atmos.In addition to needing a 4K Ultra HD or HDR device, TV, or display, youll also require a high-speed internet connection of at least 25Mb, as youll be downloading large amounts of data and don't want to endure frequent buffering.Finally, Disney Plus advises your HDMI cables support high-bandwidth digital content, and that external displays support HDCP 2.2 (High-definition Digital Content Protection).(Image credit: Disney)On what devices can I watch Disney Plus in 4K?The below come with 4K capability, including Disney Plus on Apple TV, although for some devices (e.g., Amazon Fire TV, Roku) you may want to check which specific models are compatible.Amazon Fire TV 4KAndroid smart TVsApple TV 4KGoogle ChromecastLG smart TVsPlayStation 4 & 5RokuSamsung smart TVsXbox OneXbox Series X | SDisney Plus isn't currently compatible with Nintendo devices. Plus, if you dont have a 4K TV, you wont be able to stream Disney Plus 4K but are likely to be limited to 1080p HD resolution. For full details on how to get the streaming service on media streaming devices, why not check out our specific guides including Disney Plus on PS4 and Disney Plus on Roku.Here youll find our verdict on the Amazon Fire TV Stick, Apple TV 4K, and Roku Streaming Stick+, all of which are ready to stream high-octane Marvel action and Pixar masterpieces in 4K on Disney Plus.