The majority of reports of people reporting issues with their Duo are due to the early defects found in the phone [0].
Yet another reason why it makes sense to never buying the first version of an Apple product [1], since previously:
> "But once again as I said before, don't buy the first version of an Apple product."
This was Apple's first foldable iPhone. If the price wasn't enough of a deterrent, then the defects should now be even clearer to wait until Apple fixes them in the next version.
[0] https://www.theguardian.com/technology/2026/oct/26/iphone-du...
If the extremely low odds of buying a defective one, that has full support from Apple to replace it at no cost (like they should), concerns you, then you should play the lottery more often...