Did you know that waterproof smartphones like the Sony Xperia Z3 exist because Japanese girls love to shower with them?

Sony's Xperia Z smartphones are famous for their resistence against water and dirt. We probably didn't have to tell you that, but this sort of protection is definitely a big deal — especially when it's packed not into a big, mean Caterpillar phone that's made to military apocalypse survival standards, but rather a slick premium handset that's a joy to feel and behold. We'll always keep a fond memory of how promoters used to drop the original Xperia Z inside aquariums and take it out wet, but unscathed and fully operational!

Interesting enough, water protection has been, almost exclusively, ...