Choose Your iPhone To Jailbreak
Not Sure Which iPhone You Have?
The iPhone 3G has a black plastic back with silver buttons on its side. The text on the bottom half of its back is faded out.
All the text on the back of the iPhone 3GS is in a silver color, and matches the Apple logo on the back. Other than that it looks exactly the same as the iPhone 3G.
Here's the iPhone 3G back
And here's the iPhone 3GS back
The iPhone 4 takes on a whole new design. The front and back of the phone is made of glass with a steel band wrapping around the sides.
The iPhone 4S has Siri and a band right above the mute switch.