I see some people confused, especially people at school and a few people I see walk into Apple. Here is how you can tell the differences. There are a few more ways in each, but these are the most simple IMO iPod Touch 1G: No speakers iPod Touch 2G: Open Settings>General>About Model=MB iPod Touch 3G: Open Settings>General>About Model=MC If 8GB it is a 2G! iPod Touch 4G: Camera on front and back iPhone 2G: Silver back iPhone 3G: No video camera option in Camera.app iPhone 3GS: Compass, Video Camera toggle. iPhone 4: All glass, square design.