[Norm Lenhart]

And even then, the iphone is well beyond that power/need level. It’s squarely in the want category and thats a diminishing market. New for new sake is damn expensive after a while.

[PJ-Comix]

I saw an interesting comment in the Wall Street Journal article on this topic. The reader stated that the REAL reason why people get new iPhones is to replace the battery on the oler iPhones they currently have. Here is the comment:

I just told my teenage son this weekend that the iPhone is the most expensive battery on the market. I explained that the only reason I even upgraded from an iPhone 5 to an iPhone 6 was because the battery was dead and it was not replaceable. In other words, my new battery--to get the same functionality I was already content with (and mostly the same components)--cost about $700.

If it were not for the [clever on Apple's part] battery design, I'm sure iPhone sales would actually be much lower.