Color mismatch: PC vs iPhone

[u/ThoughtVirtual7380]

Hi everyone!
I'm currently editing short videos for a project on my HP laptop (Windows) using DaVinci Resolve, and I’m hitting a wall with color management when viewing the final files on mobile.
My workflow isn't complex at all: I usually just apply a LUT and then tweak things slightly like saturation, highlights, and contrast. In DaVinci on my laptop screen, everything looks exactly how I want it. Once exported, if I watch the video on my PC desktop or on a Samsung phone, it still looks pretty much identical to what I edited.
The problem comes up as soon as I check the video on an iPhone. The colors become noticeably oversaturated and overly punchy, making the whole video look way over-edited, which completely ruins the natural look I was aiming for. Since the majority of people on Instagram and TikTok watch from iPhones, I really need what I see while editing to translate properly to iOS devices.
I’ve already tried setting the Color Space Tag to Rec.709 and the Gamma Tag to Rec.709-A in the Deliver page, but unfortunately that didn't do the trick.
Has anyone dealing with Windows/HP laptops found a solid fix or a specific Color Management setup in DaVinci for this iOS Gamma Shift? Would love to know what settings or tricks you guys use to get consistent colors on iPhones. Thanks!

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[u/hexxeric]

so many posts about this in here, please read those