Removing the motherboard, we discover a bunch of spring contacts, which connect to the fingerprint sensor, the volume and power buttons, and a few antennas.

Pulling off the shields reveals:

Qualcomm Snapdragon 632 SoC

Samsung KMRH60014A-B614 eMMC with 64 GB

Qorvo QM57508 RF front-end module

Qualcomm WTR3925 RF transceiver

Qualcomm WCN3680B WiFi module