Some Freely TVs and streaming devices support 4K Ultra HD. At the moment, BBC iPlayer and YouTube are the two main sources of free UHD content that you can stream to your 4K UHD TV.
You'll need a fairly fast internet connection to get the best out of it – we recommend a minimum 40Mbps download speed.
As demand grows and internet speeds improve, we expect to see more free 4K content become available.
Please visit this link for further information.