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Given how incredibly important they can be, having an operating range that can be exceeded by ambient temperatures in some (very populated!) regions of the world is a design flaw.
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iPhones are only designed to work from 0-35C, which is more narrow than the yubikeys, and way more important and way more widely used, so I think it will probably be okay.
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Are iphones reported to melt into a goop that detroys surrounding electronics in a ~100 degree room like the yubikey apparently is though?
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> All YubiKeys have an operational temperature range between 0°C to 40°C (32°F to 104°F).

Maybe they should work on that, otherwise Yubikeys won't be operating during the summer soon...

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So, I can't use it outside about a quarter of the year? Terrible
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