We live in the age of iPhones. Apple has sold over a billion of them now, and they're used every day by our families, our friends, our colleagues, our classmates. Not too long ago, the idea of so many of us having incredibly accessible, always connected, supercomputers in our pockets would be the stuff of science fiction. Now, it's so commonplace we take it for granted.

Blame it on the steady pace of iteration. The technology is so mature now that sometimes we don't even notice the year-over-year improvements. It's only when we look back over a few years that we realize how much has really changed. Typically for the better, but not always.

Enter iPhone 7 and iPhone 7 Plus.