The internalloudspeakerr (top speaker) allows you to hear the person you are speaking to during a call; it needs to be replaced on the iPhone 6S / 6S Plus if it crackles or no longer produces any sound.
This internal top-loudspeakere produces the sound that allows you to hear the person you’re speaking to during a call. Here are the signs that will help you determine whether it needs replacing:
Replacing it is very straightforward and takes about 10 minutes; no repair skills are required.
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