iPhone 4 thoughts, part 3

My iPhone 4 says 16 GB on the box.  Under Settings > General > About it says “Capacity 14.0 GB” with 2.8 GB listed as available.  I checked all of the display models at the Apple store today, and they all reported the same 14.0 GB, as did my first iPhone 4.

Does this mean that the OS is taking up 2 GB?  Or that the 16 GB are actually 14 GB when formatted?  Or some combination of the two?  Strange, because my old iPhone 3G, also running iOS 4, also sold in box as a 16 GB model, currently shows a capacity of 14.5 GB.

The old phone lacks a lot of features such as multitasking, yet half a gigabyte seems like a lot. If you’ve seen anything different or have any explanation let me know.