iphone 8 poor/sensitive mic during call

Just got a new iPhone 8 (updated to ios 11.0.2) upgraded from iPhone 6. When making a call if not talking directly into the mic the person on the other end cannot hear me (or my voice volume is drastically lower). This occurs when even slightly moving the phone away from my mouth or rotating the phone slightly up or down. My father has the same problem with his iPhone 8, even returned it and got a new one, same problem. Switching to speaker phone solves the problem. Also noting it does not happen all the time and a hard reset can fix it for a bit but then it goes back to the bad behavior.


Has anyone else experienced this?

iPhone 8, iOS 11.0.2

Posted on Oct 5, 2017 7:48 PM

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Posted on Feb 20, 2018 11:14 AM

I found this interesting post on a similar mic issue thread for the iPhone X (thanks to brentwoodkennyg):


I sound muffled or underwater, but only sometimes. Other calls are perfect. Tried all of the fixes in this forum - Network reset, LTE off/on, full reset, wi-fi calls off. Noise cancellation off. With and without cover. Got a replacement phone from the Apple store. None of it helped and now I know why...


The issue turned out to be how I was holding the phone. There are three microphones on the X and one of them is located by the camera on the back of the phone. Even though I didn't cover it while holding the X (with fingers and thumb on the sides of the phone, I apparently was close enough to make that mic behave differently. When I move my phone-holding position in the same grip to the bottom part of the phone, the problems vanish. I have run through a series of test with my "complainers" and this seems to pinpoint the root cause. It's either user error or a design flaw, but there is a simple workaround. Hold the phone at the bottom of the case and definitely not near the top. Problem Solved!


Update as to why this works: Apple has designed noise cancellation into the talking side of the phone. (This is different than the noise cancellation in the Accessibility settings - those are for the listening not speaking). Anyway, there is a small mic on the back of the X by the camera. It's purpose is to listen for ambient noise (think crowded bar) and to cancel that noise from what it hears from the mics on the front at bottom of the phone. Those mics hear your voice talking plus they hear the ambient noise (crowded bar). The software "subtracts" the bar sound from what it hears on the front and the listener never hears the bar noise - just your voice. (You can test this by completely covering the back mic hole with your finger - then the listener hears the bar noise and has trouble hearing your voice).


Anyway, this is a really great feature - except that if you hold the phone near the top, it channels part of your voice into that back mic and it ends up canceling out all or part of your voice. So I have to hold my phone at the bottom and things work fine. This also explains problems with folding phone cases and issues when you are holding the phone between neck and shoulder.

403 replies

Dec 4, 2017 11:37 AM in response to Globalbloke

I don't think that's it. My wife was essentially forced to buy an official Apple case (iPhone 8+) and the problems continue.


The real clue to me is that it happens most often when the phone is used a quiet environment. In a noisy environment, it actually sounds better. My theory is that the background noise cancellation is overly aggressive and cancels the user's voice out sometimes when used in a quiet environment. When given a steady bit of background noise to deal with, it works fine. It's either that or a very common hardware defect.

Dec 20, 2017 11:22 AM in response to SteveGord

I’ll say it another 100 times. It’s software affecting the hardware. Every single iPhone running iOS 11, will have this issue. It all depends on how the device took in the update back in sept. That’s why most complaints are involving devices installed with 11.x.x. This problem happened in the launch of 11 and ALL DEVICES ARE AFFECTED. I own 5 8’s and only 1 has no microphone problems. I noticed the issue when 3 different people couldn’t hear me for s**t no matter how loud I talked. It’s a sensitivity issue that ties with the software. And no. Sorry. Apple is unaware of this because they’re focusing on more emojis than the actual phone itself. I’m level 10 by the way. Not 1

Jan 31, 2018 2:15 PM in response to MCBRIDEJR

Great question. when you find out let me know. Having the same issue and have had for awhile now. Still nothing from Apple........They monitor this forum too and still nothing. Why? We want to stay with Apple but...what do we do if our phone cant even be a phone....I hate using my speaker when others are around. My sending pics via text after selecting from photo album has such a Huge delay in getting picture to select someone to text....So frustrating. Looking into the new Samsung Galaxy 9 when it comes out just in case. Apple we need your help in this matter. This is a Brand New iPhone 8 Plus.

Feb 15, 2018 11:24 AM in response to cherefromfredericksburg

Still having the same iphone 8 plus issues after months of having the phone and issues. See, everyone, Apple is reading these comments we all leave. Yes, I have had many comments removed, which i find way funny because we are letting others know what doesnt work. Apple knows whats up with all of us and are not addressing it. They remove our comments because we are speaking the facts. Still having delays in the pic and texting options and delays else where too. Have rebooted my phone daily and its getting old. I have updated to the latest software as well and still having issues. Apple Hear Us and Fix these Problems!!

Feb 21, 2018 9:33 AM in response to jerryknows

So, I went to the Genius Bar and they carried out further tests on it. They offered me a replacement which I asked to test first. It had the same problem. I will also add that it was iOS 11.1.1 on it. So I left the store with my old phone still with problems having had the explanation that the microphone is different on the 8 (compared to my previous iPhones) and either I should try to adjust my way of holding it (the problem is not there if I speak directly into the microphone) or try and send it back to the phone company as faulty and ask for a refund.

Feb 23, 2018 8:30 AM in response to Apple falls far from old Apple

Apple falls far from old Apple wrote:


Sorry, most of us would disagree with you. If you pay attention to this thread many of us have turned in our phones for new ones only to have this software/settings issue follow us.

If the problem is following you from phone to phone, that is a strong indicator that something you're putting on the phone may be the problem.

Feb 24, 2018 6:27 AM in response to KTMRider2018

I have the iPhone 8 Plus 256gb silver/white $1,049 !! and I have the same issues. 1. Mic cuts out when I make regular calls. I have to sit still and hold phone perfectly still at certain position and yet the person I call keeps saying “what?? You’re cutting out again” 2. When I go to send a pic there is a long pause/wait in between steps to send, then put the contact in to send to. Long delays that worked in an instant on my 6 and 6 S. I know everyone suggests change settings, restart phone-use earplugs or speakerphone. Well that may work but I’d like a normal working phone for $1,049. I don’t want the world to hear my convo on speakerphone or have to pull out a wire earbuds set or start up Bluetooth wireless earbuds every time my phone rings That just makes no sense. I could be somewhat satisfied if Apple would announce they reali that there are these issues and be honest about it. Either say they messed up and we just have to live with it that they are working on an update fix or a mic replacement or recall or whatever. Something would be better than all of us complaining

Feb 27, 2018 5:54 PM in response to Phono246

You are correct, switching to speaker or headset earbuds works fine. It is the iPhone 8 & 8 plus that have a defective microphone. Apple must not know about it otherwise they would want to correct their defective products before news of it spread on social media like wildfire. I don’t know how to communicate with them other than this site. Again only the regular phone is defective. If you don’t mind spending $1,000 on a semi working phone and you want the world to hear your convo you can use speakerphone. Or every time phone rings you could unravel the earbuds cord and get to chatting. I find it faster than connecting up Bluetooth wireless earbuds. ;)

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iphone 8 poor/sensitive mic during call

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