I've been fascinated with phone placement in hands for product shots.<p>It always seemed like a little bit of a cheat - especially when the elongated 5 came out - just to show one handed use of a device is possible.<p>For me at least, the way the phone is positioned is hardly comfortable. The bottom right corner at the base of the thumb exacerbates the problem the author's talking about. When I hold the phone higher in my hand with the bottom closer to the base of the index, all thumb-hook problems tend to go away.<p>Obviously this is anecdotal, but I'd love to see some studies about how people hold their phones. In some respects, I've always felt one-handed device usage was neglected by manufacturers, but I probably didn't fully understand how many users simply use two hands. I imagine data around grips (similar to [this](<a href="http://www.razerzone.com/mouseguide/ergonomic)" rel="nofollow">http://www.razerzone.com/mouseguide/ergonomic)</a>) and hands used for phones will be somewhat surprising.