The external speaker (bottom speaker) allows you to hear the phone ring when someone tries to contact you. It needs to be replaced on the Samsung A12 / A12 Nacho / A10 / A20e / A21s / A40 / A50 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.