The internal earpiece (top speaker) allows you to hear the person you are talking to. It needs to be replaced on the Samsung A05s / A15 (4G / 5G) / A16 (4G / 5G) / M15 if it crackles or no longer emits any sound.
This internal earpiece (top speaker) generates the sound of the person you are talking to 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.