SauRoNZA
Honorary Master
That's strange according to the spec table
https://techcentral.co.za/telkoms-lit-tvc-100-android-box-revealed/76676/
It has the required hardware for youtube to play 4k videos.
Maybe they using a modified youtube app. Check if they are using YouTube for Android TV.
Does he have a 4K TV?
Is the YouTube app intelligent enough to know he can't play 4K on VDSL?
Was it even a 4K video?

