Big players on the front of the motherboard include:

Qualcomm QSC6085 CDMA Processor

Elpida K4332C1PD-50-F - 512MB Mobile DDR3 RAM for the OMAP3630.

TI OMAP 3630 is secreted underneath the Elpida package (thanks Chipworks!).

Numonyx NANDA9R4N4 NAND/DRAM package that supports the QSC6085 CDMA processor. DRAM is most likely for the camera processor, while the NAND may be holding software for functions like the GPS.

AKM 8973N 019A Compass

S202 7927 microphone

This secondary microphone picks up background noise and helps cancel it for clearer calls.