iFixit has posted all of its disassembly pictures of the iPhone 3G. If you recall, iFixit traveled to New Zealand in order to be the first to completely disassemble the phone. They ended up being #4 and were able to take some remarkably good photos of the take-apart. iFixit is currently attempting to document all the chips in use on the phone. The first one they've identified is an Apple-branded Samsung ARM processor. Additional identifications will follow throughout the day.
