What is

4K UHD refers to a screen resolution that is four times that of a Full (1080p) HD TV. A Full HD TV fits 2 million pixels but a TV with 4K UHD resolution packs 8 million into the same parameter — This is made possible by making the pixels smaller. Making for a clearer picture and richer color on the TV

How to get 4k

How do I access My HD PLUS on my Samsung 4K UHD TV?

Ensure the dish is properly aligned to the MultiTV platform satellite position on Astra-2F at 28.2°
You need an internet connection (WiFi, phone hot-spot or broadband) just for the app download
Go to the Samsung Appstore on the TV Appstore, search for My HD PLUS.
Download and install to activate your 2 months free subscription.