Anyone been able to get YouTube or Netflix to play HDR video?? My Note 8 plays them no problem. My T-Mobile V30 does not show the option.
If you're watching YouTube content you should be able to switch to HDR through the quality settings on the App. As a test just search for "HDR" on the YouTube app, with the first couple of results you should be able to switch from 480p HDR, 720p HDR, 1080p HDR & 1440p HDR.
It's not so apparent with Netflix. If you were using the TV App (2017/2016 LG OLED panels) you would get a notification on the right top corner to tell you the mode (HDR or Dolby Vision). On the phone App you have to go to settings & make sure the streaming quality is set to the highest quality. You can then surf through the content, anything streaming in HDR will be tagged with the "HDR" label next to the series' seasons. You won't be getting a notification once you start streaming that the content is in HDR, but the quality should be able to speak for itself. I have tried these HDR titles all in random order "Girl Boss" , "The Punisher", "The OA". Just search for "HDR" that should help you filter out the HDR content. I also have the "4 screens - Ultra HD" plan.