iPhone 5S Review

The iPhone 5S delivers an improved camera, a nifty fingerprint sensor, and a next-gen CPU and motion-tracking chip. Apple throws in the iWork app suite for free. iOS 7 adds some nice step-ups, too, including AirDrop file transfers and the Android-like Control Center.

 External design is identical to that of the iPhone 5, including a 4-inch screen that looks downright tiny next to Android competitors. For now, the fingerprint sensor only works with Apple apps. The 64-bit A7 processor and M7 motion-tracking chip don't have killer apps yet. iOS 7 differences are potentially jarring for longtime iPhone users.

The iPhone 5S is not a required upgrade, but it's easily the fastest and most advanced Apple smartphone to date.

 I'm tempted to call the iPhone 5S the iPhone 5P, for "potential." This is Apple's half-step year, a rebuilding year. It's telegraphed by the name itself: adding an "S" versus giving the phone a whole new name. The 5S introduces technologies that could transform the future of iOS as a computing platform, and maybe pave the way for future products in 2014. But it doesn't manifest these changes right off the bat. Its promises haven't come to fruition yet.