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Surprisingly iOS doesn't do this - at least not for photos uploaded via a web form these days. Try this tool to see that (it should demonstrate the Android EXIF stripping behavior too): https://tools.simonwillison.net/exif
Couldn't you use <input type="file" accept=".jpg,.jpeg"> (different than image/jpeg mime-type I think, not sure if that also strips EXIF?), then manually parse the EXIF in JS? Shouldn't be that complicated to parse and I'm guessing there is a bunch of libraries for doing just that should you not want to do that yourself.
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