Discovered by good people in Android Police, a You Tube for Android apps now supports playback at an impressive resolution from 2160p to 60fps (4K @ 60), complete with HDR (high dynamic resolution). This would be really exciting news, if only there were more smartphones capable of taking advantage of such crunchy videos. Unfortunately, there are only a handful.
If you happen to have a Sony device with 4K HDR monitors, this is a great day for you. As an example, the Xperia 1 II has a display that can use this. I believe that Sony has a few others as well.
I tested the playback on my Pixel 5, obviously meaningless, since my resolution reaches 1080p, but I can confirm that the option is live. You just need to find a video originally loaded in 4K with HDR. As expected, these options are also somewhat limited, but the number is definitely growing as 4K adoption becomes more of the norm.
Enjoy, Sony phone owners!
// Android Police