Messenger calls should work. Audio routing issues can come up if you use headsets / bluetooth maybe.
You can install a micrphone test app to check if there’s a fundamental hardware issue though.
while this is true as of now, some of the efforts to bring an IMS stack to individual Samsung models bear fruit.
The phh/ims derived package used for bringing it to the S9 is more portable than other methods. It’s experimental and will probably first find a unofficial build per Samsung model each - but it’s a silver lining for them to continue to use the hardware.