Let's identify some ICs on the front side of the logic board:
with text background colors.
Apple A8 APL1011 SoC + Elpida 1 GB LPDDR3 RAM (as denoted by the markings EDF8164A3PM-GD-F)
Qualcomm MDM9625M LTE Modem
Skyworks 77802-23 Low Band LTE PAD
Avago A8020 High Band PAD
Avago A8010 Ultra High Band PA + FBARs
TriQuint TQF6410 3G EDGE Power Amplifier Module
InvenSense MP67B 6-axis Gyroscope and Accelerometer Combo
More ICs on the front of the logic board:
Qualcomm QFE1000 Envelope Tracking IC
RF Micro Devices RF5159 Antenna Switch Module
SkyWorks 77356-8 Mid Band PAD