Finally got the courage to open up my S9 as the microphone broke down. It's working perfectly now and I paid only $15 for the replacement parts! (sorry for the low quality
Premium Wired Earbud Stereo In-ear Headphones With In-line Remote & Microphone By Akg - Compatible With Samsung Galaxy S9 S9 Plus : Target
MMOBIEL Charging Port Compatible with Samsung Galaxy S9 2018 - Dock Connector USB C - Audio Jack/Microphone/Antenna Replacement - Includes Screwdriver: Amazon.de: Electronics & Photo
Amazon.com: PHONSUN USB Charging Flex Cable w Microphone Replacement for Samsung Galaxy S9+ S9 Plus G965U : Cell Phones & Accessories
SOLVED: Samsung S9 Hardware Layout Including Buttons, Camera, Headphone Jack, Heart Sensor and More | Up & Running Technologies, Tech How To's
Samsung S9 Microphone Repair Service Centre London
How to record video with an external microphone on a Samsung S9+ | Askfred - Interim management & business consultancy services