loudspeaker on phone very quiet

Question

iPhone 6s

Repair information and guides for the iPhone 6S released by Apple on September 25, 2015. Models: A1688, A1633

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loudspeaker on iPhone 6s very quiet.

I changed the speaker 3 times with other used phones and it is still the same.

Either ALL the loudspeakers are faulty/worn out or could it be something else?

Is there anything else eg Logic Board fault that can cause an issue?

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[deleted] crwdns2934065:0crwdne2934065:0: 587 9 9 13 · Answer 1 · 2022-10-14T13:20:16-07:00

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Check the speaker holes on the bottom of the phone aren't clogged up with dirt.

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