A 4K TV alone doesn't guarantee a 4K picture. A few other pieces need to line up first.
4K and HDR are two separate things that often get bundled together in marketing. 4K refers to resolution — the number of pixels. HDR refers to contrast and color range. A setup can support one without the other.
If any one piece in that chain doesn't support 4K or HDR, playback quietly falls back to a lower quality without necessarily telling you why. A slow or unstable connection has the same effect — see our guide on internet speed for streaming.
Your TV and streaming device's settings menus will usually list supported resolutions and HDR formats. Our Devices page covers the platform categories ApolloStreamTV is designed to run on.
Compare subscription options and device support to find the plan that fits your household.