facing the same issue. download the app from APP Store, and uninstall it. then you can install it using Xcode

Why does it work fine on iPad devices, such as iPad Pro 12.9-Inch 5G, but not on any iPhone?

I provided my test project in the bug report FB18502486.，

My question is why in my iPhone (eg iPhone15, iPhone 12 Pro, etc..), when i loop an HDR video in Photos APP or display HDR content on the screen via AVSampleBufferDisplayLayer, just wait after 20-40 minutes, the display will dim and the current EDRHeadroom will be reduced gradually, and the operating system will tonemap it to SDR. However, this issue does not occur on the iPad.

Note： the screen brightness don't decrease，but as as the current EDRHeadroom is reduced, the display will gradually dim, and the HDR content will eventually be tone-mapped to SDR by the operating system.

same as 791290