I call nonsense on you. Perfect example: Waterproofing. It would be trivial to make a waterproof (or at least water resistant) phone. Yet there are none. In fact, just having your phone in a overly humid environment will likely ruin it. This is clearly by design.
Sony's Xperia Z is notoriously water resistant: http://www.tomshardware.co.uk/Xperia-z-tablet-water-resistant-tablet-phone,news-42109.html