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

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Strange soft phone call, normal voice memo & zero video audio

What is really strange is Ia m getting faint / soft phone call audio, but when I test the Voice Memo, the audio is loud and working 100%.

I then recorded both the front and back videos. The videos record, but with no audio at all. Any one got any ideas on what this could be?

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If i’m not mistaken the back camera uses the microphone from the power flex cable for sound and the front camera uses the front camera flex microphone for it’s audio intake. Voicememos/Siri/calls with loudspeaker uses the bottom right microphone and normal calls pick up the sound from the bottom left microphone. Start of by testing with a new part then record again and see if it makes a difference.

Otherwise i would assume it’s related to audio IC on the motherboard, i dont think audio ic problems are very common on the iPhone 6S though.

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