A lot of people have never thought about what goes on inside their iPhone when they use the device. They just use the beautiful GUI (Graphical User Interface) that Apple created and go about their merry way. Then there are some of us that want to look inside the guts of the system, to go where Steve Jobs doesn't want you to go! Using a jailbroken iPhone 3GS, we used a program called Fugu to look inside the inner workings of iOS 4. Here's what we found, in pictures...