Android TV doesn't support Dolby Vision when playing content from an HDMI connected device
IMPORTANT: This article applies only to specific products and/or operating systems. Check Applicable Products and Categories for details.
In January 2018, we released a software update to enable Dolby Vision™ format on select Android TV™ models.
However, even after your TV is updated, any devices with Dolby Vision playback connected to the TV with an HDML cable, such as streaming media and UHD Blu-ray Disc™ players, will also require a software update to support Dolby Vision playback through that device. Please contact the manufacturer of your device for the software update schedule.