Galaxy Fold 1 cover screen's width (280px vs 320px)

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Hello, I’m a web frontend developer in Korea, and I wonder which of 280px and 320px is the actual width of Galaxy Fold 1 cover screen.

As a common knowledge, a website should support 280px-width because Galaxy Fold 1’s cover screen has the width of 280px. (it’s wide spread knowledge.)

But we recently realized that actual Fold cover screen says that it’s 320px wide (we’ve checked it with whatismyviewport.com )

As a web developer, should I support 280px width or just 320px would be enough?

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one thing to add. I’ve already asked the same question to Developer Support but they didn’t give me a clear answer.

[Redacted]

?

The cover screen of the original Fold is 720 x 1680 and the inside screen is 1536 x 2152.

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