The iPhone 6S is Apple's most modest 'S' upgrade yet

The iPhone 6S is the best phone on the planet right now. But in day-to-day use, it's not much different than its predecessor, last year's iPhone 6.

In fact, it might be the most mild "S" year yet.

If you don't know what I mean by an "S" year, Apple's schedule for new iPhone launches is like clockwork: New phones arrive each fall, but every other year it's only an "S" upgrade instead of a completely redesigned phone. In the "S" years, the iPhones look identical to their predecessors, but they come with better, faster, more efficient components, and offer new innovations you haven't seen before.

Take a look at all the past "S" years. It's pretty clear that the iPhone 6S is Apple's most modest iPhone "S" year yet.