I will preface this by saying that I have a 17 Pro Max, Silver, 256 GB I got in Australia with a GVC panel as a data point.
I am extremely happy with the uniformity on-axis, and it does exhibit a slight green tint on the lower 1/3 bottom when the top is tilted towards me.
However, typically if I ever use the phone tilted, it will be in the other direction, i.e. phone will be laying on a table and in this orientation, there is no colour shift at all.
If I read Apple’s official documentation here:
About the Super Retina display and Super Retina XDR display on your iPhone
It states:
Given my display is perfect on-axis and Apple says it’s normal behaviour to have shifts in colour off-angle, then I think I have got a panel within spec in my unit.
If it helps, I am in the design/creative field in my profession so I do look a high-end displays all the time. I personally own a G-series LG OLED at home.
That being said, following this thread seems to be a lot of bias towards a certain brand over another. What I will say is without a colourimetre or calibration hardware, it’s going to be difficult to tell which display is more accurate.
Sure you might like the colour or vibrancy from a certain panel, but really that’s just subjective and we can only objectively say the display which is most accurate is better.
The only post I saw was a user on this forum who measured the display of a G9N and a GVC, and concluded the GVC panel was closer to the D65 white point which is what we reference to. You can read about it here:
https://forums.macrumors.com/thread...ng-any-australians-here.2467465/post-34177656
But even then, there will be variations between the same panel manufacturer. Generally I will be looking for a panel that is accurate straight on rather than one that is not uniform.