Major players on the back side of the motherboard (gigantic version):

Qualcomm PM8028 RF Power Management IC

Atmel TINY45 8-bit RISC-based Microcontroller with 4KB in-system programmable flash

Toshiba THGBM2G8D8FBAIB 32GB eMMC NAND Flash

Kionix KXTF9 MEMS Motion Sensing Accelerometer

ST Ericsson CPCAP 2.2TC22 DC Power Management

Check out the die photo of the CPCAP 2.2TC22, courtesy of Chipworks.