It wouldn't be a teardown without a ton of silicon! Here's what we uncover on the logic board:

Apple A10 Fusion APL1W24 SoC + Samsung 2 GB LPDDR4 RAM (as denoted by the markings K3RG1G10CM-YGCH)

Qualcomm MDM9645M LTE Cat. 12 Modem

Skyworks SKY78100-20 Power Amplifier Module

Avago AFEM-8065 Power Amplifier Module

Avago AFEM-8055 Power Amplifier Module

Murata 025 Antenna Switch Module (likely)

Invensense Accelerometer