Fourth generation iPhone. Repair is straightforward, but the front glass and LCD must be replaced as a unit. GSM / 8, 16, or 32 GB capacity / Model A1332 / Black and White.

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no sound on speaker

can talk, and hear with and without earphones.

can hear, not be heard with speaker on.

cannot hear music.

i have replace a brandnew loudspeaker ( by the charger port ). didnt solve the issue, please help, thank you.

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Chosen Solution

could be either 2 things,

1) you upper mic and dock connector need te be replaced

upper mic is connected to the power button

iPhone 4 Power & Sensor Cable Replacement

dock connector is responsible for the speaker power

iPhone 4 Dock Connector Replacement

2) your audio ic has failed and you can try the temporary fix ali suggested above or take it to a professional repair shop

iPhone 4 Dock Connector Image

Guide

iPhone 4 Dock Connector Replacement

Difficulty: Difficult45 minuti - 1 ora

iPhone 4 Power & Sensor Cable Image

Guide

iPhone 4 Power & Sensor Cable Replacement

Difficulty: Difficult1 - 2 horas

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The issue you are having is due to a motherboard issue a fix can be found here

http://www.youtube.com/watch?v=0jhWxYTVx...

Regards

Ali

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giang will be eternally grateful.
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