5th
The original iPhone was great on day one. It couldn’t do as much as today’s iPhone, but it performed its feature-set extremely well. There were almost no rough edges or unpolished areas in its hardware or software, and nearly everything seemed justifiable, well conceived, and well executed.
Apple has a culture of doing things in “insanely great” ways. Sure, people can argue that they don’t always achieve “greatness” — but the attempt to do so generally produces products of higher caliber than nearly all other consumer electronics/software. Consumers can tell the difference, and until Apple bets big on a total flop, Apple’s business will likely continue to grow nicely for quite some time. Even if Google’s Android marketshare overtakes the iPhone….