> There's absolutely no spare space in a modern phone. My Treo 700p was >3x the thickness of an iPhone 5S, roughly the same width, 7mm taller (not counting the

> There's absolutely no spare space in a modern phone. My Treo 700p was >3x the thickness of an iPhone 5S, roughly the same width, 7mm taller (not counting the antenna, which was, by far, the most annoying physical part of the phone), and weighed an extra 68 grams. My manager around the same time used an HTC Windows Phone of not-dissimilar size and weight. Phones are smaller because they can be, not because they have to be.