iPhone 6/7 sound muffled to other for calls [Fixed]


For many iPhone X/8/7/6s user while on call people are getting complains that other user can’t hear clearly and the sound muffled from iPhone while talking on call. The poor quality sound from iPhone on audio calls is not limited to one set/model but is reported across different iPhone models like iPhone 6/7 and iPhone X /8. The poor call audio quality issue is occurring with iOS 11 and even with iOS 12 beta the muffled call voice issue is seen by many users. The poor audio issue on calls while talking in iPhones is making its users feel terrible.

The issue is not with mic as the other operation with mic work fine like FaceTime call, voice memo etc. but the muffled of poor quality call issue in iPhone is reported for calls only.  It may appear to other users the voice on call becomes so poor that it sounds like iphone 7 is underwater while talking. But if you put the call on speaker the sound will go fine, it’s surely a software bug from Apple that should be addressed ASAP.

How to fix sound muffled/ poor voice audio quality  in iPhone X, iPhone8,  iPhone 7 plus, iPhone 6 and iOS 11/ iOS 12

Fix 1:  Hearing aid settings
Go to Settings / General / Accessibility / Hearing Devices / - and turn on the Hearing Aid Mode switch, which then turns off the Phone Noise Cancellation switch.

Fix 2: Noise cancellation
Open Settings / general / accessibility, then scroll down to 'hearing' and turn off 'phone noise cancellation'. This will stop iphone making any changes to your voice quality from original.

Fix 3: Tap the rear mic

Tape the rear mic and it may work fine. This may help to resolve any voice reception issue and will stop iOS from applying filters to voice causing muffled voice to other users on call with iPhone.

Fix 4 : Other possible workaround
Other Possible workarounds for iphone X muffled call issue fix:
-If your iphone case has a lid which folds over, it can partially cover one of the microphones. Get rid of the iphone case you are using and test without any cover.
-Also the mic between the flash and rear camera. The iphone treats your voice like background noise and attempts to filter it. Hold your phone differently - no fold-over lid.


Unknown said…

I have applies all 3 fixes together. Will later be trying to find out whether I need all 3 fixes or just the tape over the rear microphone.

The iPhone 6s is now usable, as a phone, as opposed to being intermittently clear or muffled (it's probably been misbehaving from new). This problem has been most annoying for the recipients of calls.Them not being able to hear clearly has meant resorting to sending text messages, from the 6s, to explain what one had been saying.

Genius at my local Apple store said the only option I had was to pay them for a exchange phone.

Glad I found your advice. Thanks

As the fault affects only some phones of various iPhone models. Is it possible that the problem is due to apple using microphones that don't all have the same sensitivity ((possibly the one beside the rear camera being extra sensitive)? Hence perhaps if apple corrected their firmware to sort this issue it would the cause some alternative issue for other users.


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