Here’s a quote from Jobs about the sensors it’s outfitted with: “We’ve also got some stuff you can’t see–3 advanced sensors. It’s got a proximity sensor, bring the iPhone to your ear and your display shuts off and touchscreen shuts down. Ambient light sensor–adjusts brightness, saves power. Third thing is an accelerometer, it can tell whether you’re in landscape and portrait.” Also, if you’re rawking out and you start blowing up (you know, if, like, someone calls you), the iPod function automatically fades out the music to take the phone call.