Here's an interesting, if somewhat odd bug found with Samsung Windows Phones: if you send a photo to any device with iOS 4.2, upon saving the photo, it renders it unreadable. So you can preview it when attached in an email (like above) but if you save it to the Photo Library, you get the gray JPG image and no pic. And indeed, we replicated the problem ourselves.
A simple work around is to use a 3rd party editor like Thumba 2 or Pictures Lab--those programs will alter the JPG header data in such a way as to render this (ba-zing) a non-issue. Of course, that's no excuse for Samsung (or Apple) to not take a look at this and address the issue for those iOS devices and Samsung phones.
Further discussion can be found in the Microsoft Answers forum. Thanks, Not Shred, for the tip!
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Daniel Rubino is the Editor-in-chief of Windows Central. He is also the head reviewer, podcast co-host, and analyst. He has been covering Microsoft since 2007, when this site was called WMExperts (and later Windows Phone Central). His interests include Windows, laptops, next-gen computing, and watches. He has been reviewing laptops since 2015 and is particularly fond of 2-in-1 convertibles, ARM processors, new form factors, and thin-and-light PCs. Before all this tech stuff, he worked on a Ph.D. in linguistics, watched people sleep (for medical purposes!), and ran the projectors at movie theaters because it was fun.