> They moved the headphone jack to the bottom of the phone for a reason
I seem to recall hearing that was because people most often carry their phones upside-down in their pockets, in order more quickly to bring them up to viewing position when retrieving them. (Think about it: Your hand goes fingers-down into your pocket, but viewing position has the top of the phone alongside your fingertips, so if you pocket your phone upside-down, you don't have to rotate it around the Z axis to get it into position before you can use it.)
No idea whether that's actually the case, or whether instead it was something to do with easier component placement or the like. But as far as just-so stories go, it's not a bad one.