'Is Disney Plus 4K?': Yes, but you'll need the right equipment — here's what you need to know

You can stream Disney Plus in 4K resolution at no extra cost, but not every movie or show is available in 4K.

'Is HBO Go 4K?': What you need to know about streaming quality on HBO's provider-supported service

HBO Go shows and movies are not available for streaming in 4K or HDR. Subscribers can only view content in 1080p HD at best.