Black boxes on all photos taken with my new iPhone 14 - how to stop them

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We're not clairvoyant nor can we see you Mac screen so you'll have to provide more info. Post a screenshot of what you're seeing and in what view with your next reply.

RAW is a special image format, storing the image withou any modifications right from the sensor of the camera. RAW files are usually hugh files, and need developing, before we can view the image.

Professional photographers love to use the RAW format, because we can it will give better results when editing a photo. For RAW files on an iPhone see: About Apple ProRAW - Apple Support

When you select one of the photos with the black squares and tap the button with the three dots in the upper right corner, is there an option to revert this photo to the original? If yes, try if reverting to the original will remove the black squares.

I have seen random black boxes, when my photos have been edited with a third party app, that is no longer compatible with the current system version. Have you been using the standard Camera.app that comes with the system or a third-party camera? Are you shooting RAW?

Opps. Didn't realize that it was an iPhone issue. This and my previous reply will self delete in 10, 9, 8, 7, 6, 5……………