The closed display halves almost touch, and that can smash debris into the screen.
"I didn't do anything to deserve this. The phone sat on my desk while I wrote about it, and I would occasionally stop to poke the screen, take a screenshot, or open and close it. It was never dropped or exposed to a significant amount of grit, nor had it gone through the years of normal wear and tear that phones are expected to survive. This was the lightest possible usage of a phone, and it still broke."
This can happen to any phone of course — there are numerous threads on reddit of faulty S23 phones that are only days old, and of course the first Galaxy fold phones were problematic — but still. Rough start!
Shame. I have a Samsung Z Flip 4, and I'm blown away by how much I love this phone. I'm desperately hoping foldable phones are the future, or an expected option like how "pro" or bigger size models are. The only way I can see that being the reality is widespread adoption by manufacturers, and if new models run into issues like this that hurts their future.
I have the 3 and while I had it replaced once because of something similar happening as mentioned, it has been a wonderful phone. I thought about getting the 4 but couldn't justify the cost of replacing since it's already such an expensive phone lol.