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Repair information and guides for the fifth generation of iPhone. Model: A1387

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Call problems, changed antenna, nothing change

Hello,

iphone 4S, 16 gb , black.

GSM signal (fine)

call quality bad (both with speaker and earpiece)

sudden interruptions

same sim card/ different phone works fine.

the proximity sensor closes lcd but not digitizer so when you talk it can mute it.

I replaced antenna

then replaced proximity sensor

nothing changed.

This problem started right after I crashed my lcd.

lcd normally works fine, but what is going on?

Answer this question I have this problem too

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1 Comment:

still no answer :/

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I have a feeling that it's an issue relates with the ribbon cable connecting the sensor and speaker phone. I would replace it if I were you it cost only 5$ from ebay

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I will replace it ASAP

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2 Comments:

replaced with a normal sensor. still got problem.

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not solved. what else to change?

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