IPhone speaker sounds crackly?

I'm using iPhone 3Gs. I got it since 6th Grade. Now I'm in 8th Grade. My iPhone often drops in the past. I bought an Android and I didn't used it for a couple of years. Now I'm using it I noticed dirt/dust in my speaker. Is there a way to get rid of this issue?

It is most likely a problem with your speaker module, the only way to fix it would be to take it to an apple store and have one of their technicians repair it. (The iPhone has no user friendly parts, and so should not be disassembled by the user, only by a qualified technician.) A new speaker module would cost about $60 (at least that's what I was told by the technician who repaired my phone. )

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