Hi I've got the same issue. I've noticed a call a bit better when I am on WhatsApp but worse on the Facebook messenger.
Same problem here with fresh n rebel flow wired headset. Works perfect on other Motorola phones. But an old original samsung headset works fine.
Any solution yet?
I got the same problem, I noticed yesterday that the cellphone is not using the mic in the wired or in the bluetooth headset, is using the mic built in the cellphone.
I've been searching for this issue on the web for a while now and it seems just a few of us are experiencing this. Call is the main function that I intended for this phone (a52s) but now I am stuck with my old phone for calls which doesn't make sense.🤦♀️