The external speaker (the one at the bottom) allows you to hear the phone ring when someone tries to contact you. It needs to be replaced on the Samsung A23 5G / A42 5G / A32 5G / A32 4G / M31S if it crackles or no longer emits any sound.
This bottom external speaker generates sound when your phone rings or when you put the speaker on during a call.
Here are some signs that indicate it needs to be replaced:
Replacement is very simple and takes about 15 minutes; no repair knowledge is necessary.