On the flip side we find some more HiSilicon and some mystery chips:

HiSilicon Hi6421 and Hi6423 Power management IC (as seen in the Mate 20x)

HiSilicon Hi6D05 Power Amplifier Module

6S03V100 2029S13 0022

438 AkLNA 120514

6H12 V1GP1 63024/V1HP510025

Most of the connectors are soldered onto the motherboard as the second layers only reveal contact points underneath.