Big players on the front of the lower motherboard include:

Qualcomm RTR6285 multi-band UMTS/EGPRS transceiver with integrated GPS

Qualcomm Snapdragon QSD8250 1GHz RISC microprocessor with embedded DSP.

Samsung KA100O015E-BJTT 512 MB NAND Flash + 512 MB SDRAM chip

Like most smartphones, the Surround utilizes dual microphones to cancel background noise during phone conversations. The lower microphone can be seen near the Micro-USB port.