No sounds or microphone

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iPhone 6

Repair information and guides for the iPhone 6 that was released on September 19, 2014. Model Numbers: A1549, A1586, and A1589

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Mark Metheny @bumpandrun

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Posted: Aug 2, 2017

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No sounds or microphone

Today a friend gave me his old iPhone 6 after saying that the speaker doesn't work anymore. Having worked on them for a while now and having a couple extra speakers laying around I decided to try replacing the speaker. I replaced the speaker but still no sound. I then tried the microphone and it is grayed out too. Then I tried making a call and the earpiece is not working either. The charging port and vibration functions work along with the cellular antenna so I'm not sure if it would be a charging headphone port problem. I can't reset in DFU until I get home later today but tried complete resets and no luck. Any ideas would be appreciated

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Tried complete restore when I got home still not the answer. Even restored to an IOS 2 years ago and nothing. Then I tried changing the lightning port headphone connector and still same thing. At a loss so far.

Aug 2, 2017 by Mark Metheny

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The Microsoldering Shop @teetopp

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The Microsoldering Shop

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Posted: Aug 2, 2017

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I just completed a repair recently with the exact same issues and had to reball the Audio IC and all worked fine after. Not sure of the history of that phone but with all things related to audio and different parts, that would be my best guess.

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Pretty sure I couldn't reball the audio IC as I had to look up reball in the first place. Ugh. I worked on the phone once before and replaced the wifi antenna and the gps but no other issues. No water damage or anything else I can think of. He says the speaker just quit working one day so he went and got another phone. He was within his upgrade time so he just gave me the old one since I had worked on it for him before. What would I need to do to check if it needs reballed?

Aug 2, 2017 by Mark Metheny

I also have a couple other phones here that I can swap parts from if needed just as long as it's not in the logic board because my spare board has one of the wifi antenna connectors broken off.

Aug 2, 2017 by Mark Metheny

There is another tech here who has helped me a lot Minho @refectio, hopefully he will see this comment and offer any other suggestions to try first or at least confirm my suspicions

Aug 3, 2017 by The Microsoldering Shop

All of the microphones feed into the same IC (U900), the one Michael is referring to. So if none of the microphones work, then that is the source of the problem. I would try and test each microphone independently to be certain.

* The bottom microphone is for Voice Memo and phone calls. The other microphones serve as error cancellation

* The (top) front microphone is used for FaceTime calls, Siri and selfie videos with the front camera (FCAM). The top back microphone serves as error cancellation

* The (top) back microphone is used for videos with the rear camera (RCAM). The top front microphone serves as error cancellation

Aug 3, 2017 by Minho

None of the microphones work at all. I pull up FaceTime and it shuts down. The voice memo won't let me push record, the red button is grayed out. If I try to play a video on YouTube it loads but never plays although I can move the slider anywhere in the clip when I hit play it just sits there. As for the camera when I try to record any videos it shuts down the app with front and rear cameras tested

Aug 3, 2017 by Mark Metheny

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Tried complete restore when I got home still not the answer. Even restored to an IOS 2 years ago and nothing. Then I tried changing the lightning port headphone connector and still same thing. At a loss so far. — Mark Metheny
Pretty sure I couldn't reball the audio IC as I had to look up reball in the first place. Ugh. I worked on the phone once before and replaced the wifi antenna and the gps but no other issues. No water damage or anything else I can think of. He says the speaker just quit working one day so he went and got another phone. He was within his upgrade time so he just gave me the old one since I had worked on it for him before. What would I need to do to check if it needs reballed? — Mark Metheny
I also have a couple other phones here that I can swap parts from if needed just as long as it's not in the logic board because my spare board has one of the wifi antenna connectors broken off. — Mark Metheny
There is another tech here who has helped me a lot Minho @refectio, hopefully he will see this comment and offer any other suggestions to try first or at least confirm my suspicions — The Microsoldering Shop
All of the microphones feed into the same IC (U900), the one Michael is referring to. So if none of the microphones work, then that is the source of the problem. I would try and test each microphone independently to be certain.

* The bottom microphone is for Voice Memo and phone calls. The other microphones serve as error cancellation

* The (top) front microphone is used for FaceTime calls, Siri and selfie videos with the front camera (FCAM). The top back microphone serves as error cancellation

* The (top) back microphone is used for videos with the rear camera (RCAM). The top front microphone serves as error cancellation — Minho
None of the microphones work at all. I pull up FaceTime and it shuts down. The voice memo won't let me push record, the red button is grayed out. If I try to play a video on YouTube it loads but never plays although I can move the slider anywhere in the clip when I hit play it just sits there. As for the camera when I try to record any videos it shuts down the app with front and rear cameras tested — Mark Metheny

WillaFoster @willafoster Rep: 1 2 · Answer 1 · 2017-08-02T19:59:04-07:00

To find out if there’s an issue with the microphone on your device—and not your cellular connection or the app that you're using—test each microphone. To test the microphone of your iPhone, open Voice Memos and tap the record icon. Then speak into the microphone and tap the play icon to play back the recording. You should be able to hear your voice clearly.

If your voice sounds faint when you’re using the speakerphone on a phone call, make sure that your iPhone receiver isn’t blocked or covered.

If audio from video recordings sounds faint, or Siri can’t hear you, make sure that the microphone near the iSight camera—on the top, back corner of your iPhone—and the receiver isn’t blocked or covered.

If you still have issues after testing the microphone on your device, try these steps: Get help with the microphones on your iPhone, iPad, and iPod touch

iPhone 6

No sounds or microphone

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