Five years ago today, Apple released the first-generation iPhone. Priced at $499 for a 4GB model and $599 for the 8GB model, it featured EDGE cellular networking, Wi-Fi, Bluetooth, a 2-megapixel rear camera, and was exclusive to AT&T. Notably, it was limited to 16 built-in apps—the App Store didn’t debut until a year later—and represented a number of firsts for the iPod family: the first touchscreen iPod, the first iPod with…