See the marking on that chip with the Apple logo? No, not the "N90" codename indicating that it's from Apple's next generation GSM iPhone, the other text. If we're not mistaken then we're seeing "339S0084" on that chip from today's fourth-generation iPhone teardown. Guess what? According to Chipworks, that's the Apple A4 microprocessor fabricated by Samsung and the presumed work of Apple's acquired PA Semi and Intrinsity engineers. The "APL0398" text is also the same as that found on the iPad's speedy and power sipping A4 system-on-chip. The other markings differ however. What that means isn't entirely clear yet but we're digging.

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Fourth generation iPhone teardown reveals A4 microprocessor