Final Explanation of Gamma and Color Shift Problems

Not sure why.
Just try setting project itself this way.

When I try this I get craaaaazy extreme colors happening to my image. I am so discouraged by this. My images seem to be coming out darker than the viewer and even when the Quicktime image closely resembles the Resolve viewer, the same image on my phone looks completely different. Has anyone put together a SUCCINCT solution to these issues? There’s so many pages of nuanced tech talk here I could really use someone’s help understanding how to improve or accept what must be accepted. I just don’t know up from down at this point. I’m working on a 2019 Macbook Pro maxed out. Posts with screenshots on my page. Thanks.

>Rec.709-A reads Rec709 gamma in Apple way

There's a one interesting moment.
If I will be use rec.709-A, so I'll be watch my created movie in qtime well. But - if I'll watch that movie under iOS (iphone/ipad), or under tv (rec.709/2.2), that move will watched more dark. more contrast.

If I'll be use rec.709/2.2 in resolve (proj settings), so all're ok.

I'd calibrate my monitor with rec.709 2.2 settings (i1disp pro with i1profiler).
The file, that was created from resolve is prores 422 and converted as with ffmpeg (libx264), so and with apple compressor. two variants. I believe, that apple compressor can view gamma tags of movie. any result is showing a more contrastly image under ios/tv. There is normal one only under computers (qtime).
But strange to say, many people like to watch video and under ios/tv.

Since you can't avoid it, try to find out what is the preferred device of your audience and target that.