> The iPhone was a small battery powered box you can hold in your hand and it could play music, just like the iPod, but at the time the iPhone debuted, that's a

> The iPhone was a small battery powered box you can hold in your hand and it could play music, just like the iPod, but at the time the iPhone debuted, that's about where the similarities ended. iPods had just become colour when the iPhone came out, so the main differences were interaction (touchscreen vs "touch wheel"), screen size and connectivity. It wasn't long before the iPod touch came out, with a big touchscreen and apps; basically a non-phone iPhone, giving that different audience a clear transition path.