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Herausgegeben am 25. September 2015. Model A1687/A1634. Die Reparatur des 6s gestaltet sich ähnlich zu denen früherer Generationen; benötigt werden Schraubenzieher und Hebelwerkzeuge. Verfügbar mit GSM oder CDMA / 16, 64 oder 128 GB / Silber, Gold, Space Grau oder Roségold.

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High pitched sound when in voice calls (Not during Speaker mode)

Only during phone calls (making or receiving), there is a distinct high pitched noise. Which is really uncomfortable to bear for the receiver, caller.

I’ve tested taking videos (nothing wrong there), Making voice memo (nothing wrong there). Even playing music.

However, if I select the Speaker mode it goes away. As well as if using an earphone with mic plugged in.

Little history on the device:

The phone front screen was finally shattered (after many years), and took it in for repair/replacement (at a local repair shop). It was repaired, and all was well (albeit having to return for faulty screen). This repair/replacement was done last week.

I’ve also installed a replacement battery ordered from this website with success, a day after the repair was done. All checks were good. There were no more issues (besides the minute lack of response/feedback feel from the replaced screen unit by the shop versus the original screen that was broken).

Today, this problem started out of the blue.

I’ve tried to hard reset the phone thinking it was the culprit. The power button + home button, and the DFU reset. Failing that, I have backed up the phone and fully reset the phone as it was out of the box, and updated the phone with back up. That didn’t work either.

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1 Antwort

The 6s has four microphones. If Siri can understand you and front facing video sound is alright you can rule out the top microphone. On the charge port assembly there are another two microphones if one of these becomes faulty it can cause the problem you are having. Check the dock connector is properly seated. If it is replace the charge port assembly.

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Hi Chris,

I've checked that Siri indeed worked. So how can I check if the other two microphones are working?


I've disassembled the phone to check for any loose internals. There weren't any upon first glance.

However, I recalled having to screw the screws that held the charger unit (?) which were slightly 'loose'. So I've tried to not fully screw them all the say, and leave them as before. Leaving them ever so slightly undone.

Screwed in all the loose screen screws on the sides of the phone (presumably which held the back of screen in place). Restarted her and it works okay so far.


Oops, posted too soon. The issue have returned, sadly.

At a loss here as to where to troubleshoot.


@John Doe Replace the charge port. They are not expensive.


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John Doe wird auf ewig dankbar sein.
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