In each case, the physical connector is the same, but capabilities have been added.
Products incorporating several or all HDMI version 2.1 features became available beginning with the 2019 model year.
For you to take advantage of HDR, the content has to be encoded with the necessary HDR metadata.
If coming from an external source, this metadata is transferred to the TV via a compatible HDMI connection.
HDR-encoded content is available via the Ultra HD Blu-ray Disc format and select streaming providers.
HDMI ARC (Audio Return Channel) is a feature introduced in HDMI version 1.4.
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It’s a way to simplify sending audio from a TV to another external speaker or home theater receiver.
For this to work, your phone must support HDMI Alt Mode
