Hello!
I've just bought a Phillips TV (the 55PUS7502, to be specific) and updated Android to 7.0. Perhaps it's a silly question, but shouldn't the TV display "HDR Signal" when playing a 4K HDR video from the uilt-in Youtube-app?
The videos sure doesn't look like they are supporting HDR.
It's because it doesn't, you need VP9 profile 2 to support HDR on Youtube and this TV doesn't support this codec