Question:

 When playing the media files of Netflix on my mobile device, I think HDR quality is not supported.

Answer:

 HDR support in Netflix operates depending on Netflix's authentication process per device and the HDR authentication is decided by image quality evaluation of Netflix itself. So, if the target device that you play the media file on Netflix does not meet the quality certification level of Netflix itself, HDR may not be supported on Netflix. It's a normal operation according to Netflix's operation policy.

For more, you can refer to notice of Netflix's Website https://help.netflix.com/en/node/23939

Streaming Netflix in HDR requires Netflix app version 5.0 for Android. To stream in HDR, you will need:

•  A compatible device that supports viewing HDR content
•  A plan that supports streaming in Ultra HD. You can check which plan you're currently on at netflix.com/ChangePlan.
•  A steady internet connection speed of 25 megabits per second or higher.
•  Streaming quality set to High. More information about video quality settings can be found in our playback settings article.

Netflix is available in HDR10 on the Samsung Android devices below

Galaxy Fold LTE/5G, Note8, Note9, Note10/10+, Note20/20 Ultra, S9/S9+, S10/S10+/S10 5G/S10 Lite/S10e,

Galaxy S20/S20+/S20 5G/S20 Ultra/S20 Ultra 5G, Tab S3, Tab S4, Tab S7+, Z Flip/Z Flip 5G, Z Fold2

Note: Devices must run the latest firmware for HDR10 playback to work properly.

Netflix is available in HD on the Android tablets below

Galaxy Tab 10.1, Tab A, Tab A 8.0, Tab A with S Pen, Tab Active 2, Tab Active Pro, Tab A7, Tab S 8.4, Tab S 10.5, Tab S2, Tab S3,

Tab S4, Tab S5e, Tab S6/S6 Lite, Tab S7/S7+, Galaxy View/View2

Note: Devices must run the latest firmware for HD playback to work properly.