Let's check out the left-side board.

Are those silicone seals around the flex cable connectors? It sure looks like it. We first spotted these ingress-protection measures way back on the iPhone 6s, but they're not a common sight on Samsung products. When the chassis isn't water or dust-proof, this is how you build in a little board protection.

Meanwhile, here's the silicon we found on this board:

Samsung S2MPB02 camera power management

Samsung S2DOS05 display power management

Cirrus Logic CS35L40 haptic driver w/ digital signal processor

Cirrus Logic CS40L25 audio amplifier

Samsung S2ASL01 over-current protection (likely)