Not much to say here, let TIME do the talking:

The iPhone changed the way we think about how mobile media devices should look, feel and perform. The design is exceptional inside and out: It's got a slick glass-and-stainless steel case and an elegant touch screen loaded with eye candy. It's an iPod and a 2-megapixel camera. Images and video clips display vertically or horizontally — they reorient themselves depending on how you hold the thing. When the phone detects a wireless network within range — your own home wi-fi set up or somebody else's — it lets you tap once to connect, and then proceed with your Web surfing, Google mapping, emailing and other activities that can otherwise be painfully slow over AT&T's cellular network — the only one, unfortunately, that carries iPhone calls.