[Scuba Steve]

Originally Posted by gprsh924

If they did, they would likely be looking at a lawsuit

The main logic board is one very weird piece of this puzzle. Unlike the iPhone 3GS teardown, which revealed a large logic board along with another part down by the dock connector, this design only has something maybe 1/3 of the size, along with one or two extraneous parts. Basically, the guts have shrunk drastically...

Unfortunately for us, Apple intends to keep this a secret. There are no markings on the board, but even so, the board was encased in metal all around so nothing could get through and would be very difficult to remove without breaking the device. Anyone trying to take this part off the phone would damage the device irreparably. On top of this metal, there was a thermal paste-like material. And on top of that, black tape. They really didn't want people looking inside.

I wanted to make sure I didn't damage the components beyond repair, so I didn't take the metal off. So this is as much as I could learn without actually breaking the phone. And this is why I couldn't find out if there was an A4 processor—like the iPad's—in this iPhone. I also couldn't really identify many parts, because they were hidden under the metal sheath.

The Next iPhone, Dissected - Iphone 4 - Gizmodo