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iPhone 7 Plus Phone Call Sound Quality

So we just got 2 new iPhone 7 Plus' and I am noticing that the incoming call audio quality on both sounds strange. I have the Apple leather case on the phone and incoming audio sounds distant. Like it is coming from behind the phone or something. It almost sounds like the phone is on speaker phone but it isn't. Turning the volume down helps a bit but it seems off. Previous I had an iPhone 6 so I don't know how this compares to the 6 Plus.


Any help is appreciated!


Thanks!

MacBook Pro with Retina display, OS X El Capitan (10.11)

Posted on Sep 16, 2016 11:36 AM

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Posted on Mar 2, 2017 5:26 AM

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The iPhone 7 (Photo credit: John Taggart/Bloomberg)

With the launch of the iPhone 7 and iPhone 7 Plus, Intel finally made its way into Apple's most important product. Good news for Intel, no doubt, but not for consumers.

Tests of LTE connectivity, released on Thursday by Cellular Insights, show a huge performance gap between the iPhone 7 equipped with an Intel modem and a Qualcomm modem. The difference in performance is a black eye not only for Intel, but also for Apple, which for the past five years had relied on Qualcomm exclusively for its iPhone modem chips. With the iPhone 7, Apple decided to make two versions -- one with an Intel modem and one with a Qualcomm modem. (Neither Intel nor Apple have commented on the performance gap so far.)

For consumers, the downside of owning an Intel version is significant. The tests revealed that Qualcomm-powered iPhone 7s are able to consistently establish stronger connections to LTE networks than Intel-powered iPhone 7s. Qualcomm modems outran Intel modems by 30% in overall performance, and 75% when the signal was at its weakest.

Since writing a story about these modem benchmarks, readers have asked FORBES -- directly and via Twitter -- how to make sure they're buying the better iPhone 7 with a Qualcomm modem. If you want to get the best bang for your buck, you probably should be careful which iPhone 7 you end up buying.

Here are some ways you can make sure you're not buying the inferior iPhone 7.

Model number

As this Apple spec page shows, Apple created two distinct versions of the iPhone 7 and iPhone 7 Plus to segment out devices with an Intel modem or a Qualcomm modem.

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By checking the model number on the back of the iPhone 7, you will be able to tell:

  • Model A1660 and Model A1661 means they have a Qualcomm modem.
  • Model A1778 and Model A1784 are equipped with an Intel modem.

Carriers

If you're a United States-based customer buying from a carrier, the best way to make sure which iPhone 7 you're getting is:

  • Verizon and Sprint sell the Qualcomm-powered iPhone.
  • AT&T and T-Mobile sell the Intel-equipped iPhone.

The Apple spec page indicates that the Intel-powered

A1778 and A1784 phones won't support CDMA (or code division multiple access), a cellular technology used on some LTE networks. That means an Intel-powered iPhone 7 simply won't work on CDMA networks, such as Verizon's and Sprint's.

Qualcomm's modem works on all the four big carrier networks in the US. And o

verall, Qualcomm's modem supports a much wider variety of cellular technology than Intel. Qualcomm hardware supports GSM/CDMA/WCDMA/TD-SCDMA/LTE, while Intel's only support GSM/WCDMA/LTE. That means that in addition to improved connectivity performance with a Qualcomm modem, Qualcomm can work on more networks.

Apple also sells unlocked versions of the iPhone 7 and iPhones 7 Plus that

come with a Qualcomm modem.

The relationship between modem makers and carriers is a close one. Supporting various cellular technologies is extraordinarily complex. Each carrier has their own unique network demands and features. Qualcomm has been in this game a lot longer than Intel, and as a result, it has a lot more to offer the consumer, according to experts.

“Building modems for today’s cellphones is an extremely daunting task,” said Sundeep Rangan, an engineering professor at New York University who specializes in wireless technologies. “It has to support a dizzying array of features and get the chips down to a form factor and low power performance.”

Follow me on Twitter @aatilley or send me an email: atilley@forbes.com

504 replies

Dec 12, 2016 1:40 PM in response to Trulszhong

Same here - I made several tests using the built-in voice memo app, and out of 10 recordings 1 was very very bad. All had definite static/hissing sound which would be tolerable, but the worst recording added buzzing which made it difficult to hear my own voice. I think this is due to the new noise cancellation software as some people here suggested - and it occurs randomly. I'm not sure of those, who have bad quality all the time have the same issue - they could have a malfunctioning microphone.

Dec 12, 2016 1:42 PM in response to Steven Fisher1

I dropped an email to Tim Cook about the problems we've been having with calls. To my total surprise someone from the Executive Team office rang me back today, unfortunately I missed the call but will speak to them tomorrow. I'll discuss the problems people have had trying to convince Apple Support that there is a problem with the audio quality on phone calls. I'll also mention how difficult it is to discuss these issues with the community when so many of the forum messages get deleted by over enthusiastic forum moderators. If I'm not censored again I'll try and update this thread with the progress, or lack of it.

Dec 12, 2016 2:16 PM in response to ===Andrew===

Hi Andrew,


As I wrote in my previous posts, my tests of Voice Memos on the regular 7 did show that there is something wrong with the recordings - the buzzing/static sound is much worse than on a 6S. On 1 recording I heard this cutting out and even more noise. I think this issue has more to do with the software for the audio converters/audio processing on the 7s.


And I definitely see the same issue with the distance from the mouthpiece and the drop of quality for the person I am calling.

Dec 12, 2016 3:07 PM in response to Machinezane

Apple needs to acknowledge there is a serious problem with the new iPhone 7. I have heard only some of the new iPhone 7 and 7 plus phones have this problem suggesting enough people are experiencing this that it is either a hardware or software glitch. I want the issue resolved or I want my phone replaced. I can't have everyone saying they can't hear me.

Dec 12, 2016 3:46 PM in response to Steven Fisher1

Ok, boys and girls - I made it through the whole 20 pages of this thread (and keeping up with the deleting posts 😉), just as Lawrence did and I too have some observations. 🙂😀


First - I totally agree that there are several issues, that we are discussing here. However, most of us have problems with the bad call quality for the people on the other end of the line (in my case they said that I was becoming distant or just could not hear me). It is not clear though how often it occurs, as most people only report the "me-too" symptom. I can say that in my case I had only a few calls, when the caller said they could not hear me or I was dropping out. I must admit though that I had the phone for like 3-4 weeks and was not making a lot of calls (3-4 day, 1-2 min in length). I think that most of the problems could be resolved by realigning the phone (I have iPhone 7) so the microphone is closer to mouth - this improved the call quality. So Yes - "you are holding it wrong!" seems like the correct advice from Apple Support/Genus 😐 This issue would therefore be more related to the new noise cancellation protocols and the direction in which the microphones are working (ISSUE 1), as some suggested earlier.


Also - the Voice Memos test - I made the same recordings now with some music playing back from my comptuer on iPhone 7 and 6S. Of course on both you can hear some static humming sound (these are not microphones costing thousands of $), but the recordings from 6S are definitely better - both the music being played back, and the overall noise. On the 7, ALL the recordings are worse:

-the sound is very compressed so the music was difficult to distinguish

-the static humming is much more prominent - and this is most probably due to the microphone being set too sensitive (too much gain). This proves ISSUE 1 being software related. Though some others on this forum are not reporting any issues with this test - please, make sure to compare recordings made in the same conditions with a different phone.


In my case there was however the second problem - ISSUE 2 - a few times, especially when I was having a longer conversation the caller said that there was noticeable buzzing heard, through which they could not hear me. I thought that this must be a carrier issue or signal dropping, but then on 1 of my recordings I heard this buzzing come up, quite randomly. This could not be resolved by adjusting the phone - but in my case it disappeared during the call (only to turn up again and then disappear a few times). I am not sure what the cause could be, but this is also likely a software bug.


/also - updating to 10.2 did not help me with ISSUE 1 when testing Voice Memos/


On a general note, I do hope that this issue gets resolved. I will be doing more testing, and I plan to test also my father's new iPhone 7 - both on the call qaulity and the voice memos.


I am pretty sure that Apple is aware of this issue - from all the different sources reporting issues with phones, they must have this bug somewhere on their list. It might even get to the press at some point - I am curious if Andrew can get something across to the Apple bosses, who might contact him.

Dec 12, 2016 4:35 PM in response to Yogasal

Yogasal wrote:


Apple needs to acknowledge there is a serious problem with the new iPhone 7. I have heard only some of the new iPhone 7 and 7 plus phones have this problem suggesting enough people are experiencing this that it is either a hardware or software glitch. I want the issue resolved or I want my phone replaced. I can't have everyone saying they can't hear me.

Call Apple or visit an Apple store and they will replace your phone. Which may fix the problem. To make it easy call with the phone, so they can hear the problem.

Dec 13, 2016 12:06 AM in response to Machinezane

We seem to be a very tolerant bunch considering the value of our Iphone 7/7+ which in many cases don't make calls properly. The quality of these phones seems to be very inconsistent, my first 7+ had poor call quality and the battery required recharging by around 6pm every day, my replacement 7+ exhibits the same call quality but the battery is still at 50% by 6pm for the same type of usage. Whilst Apple have offered me another replacement 7+ I'm reluctant to accept their offer for fear of ending up with another 7+ with both call and battery issues at least for now I have good battery life. Every single hand call I make or receive is terrible, I always end up shouting to try and get the person at the other end to hear me but my voice keeps breaking up, there's no such thing as taking a private call on my phone because everyone around me can here me shouting, can you here me, is that better, can you still hear me. What a load of ******* roll on the S8/Note 8, think I'm going back to Android once this phone is usable and therefore sellable. My romance with Apple is coming to an end I think, no MacPro or Macbook Air upgrade which means I may as well sell my Ipad Pro, I for one am sick of this.


EVERYBODY ARE WE GETTING TO HUNG UP WITH COMPLETING ALL THESE TESTS AND FORGETTING THE BASICS, IT'S AS EASY AS THIS, THE BASIC FUNCTION OF ANY MOBILE PHONE IS TO MAKE PHONE CALLS, I'VE HAD TWO IPHONE 7+ BOTH OF WHICH EXHIBITED TERRIBLE CALL QUALITY, WHY OH WHY OH WHY APPLE. OH AND THE 10.2 UPDATE MADE ABSOLUTELY NO DIFFERENCE SUGGESTING APPLE AREN'T DOING ANYTHING ABOUT IT!!!!!!!!!!!!!!!!!!

Dec 13, 2016 10:14 AM in response to Steven Fisher1

I think I might have made a step forward!


Shane in Executive Relations called in response to my email to Tim Cook. He heard the poor voice quality for himself until I plugged my headphones back in. He advised me to do a "Erase all contents and settings" to totally reset the phone (as I had done previously with Apple Support) but to select "Setup as new iPhone" rather than "Restore from iCloud Backup" (which Apple support had previously advised me to do). You then enter your Apple ID and password to connect to iCloud via WiFi. The only thing Shane forgot to mention is that you should remove two factor authentication before you start this process (unless you have other Apple devices connected to your Apple ID - which I don't). I didn't know this and as a result I could not verify with my phone or receive the SMS verification code which was texted to my, now partially setup, iPhone 7+. I put the SIM card into my old Nokia 930 and had the verification code resent. This allowed me to complete the 'new' phone setup process. Unfortunately all my Apps and settings have gone! I need to reinstall and set them up with usernames and passwords etc....what a pain, particularly as it's deleted my Microsoft 2FA accounts held in Microsoft Authenticator!


I'm pleased to report that, for the first time since I bought the phone, I've been able to make a hand-held voice call without having to use the headphones! I'll upload a video showing the big difference in quality following the reset (see my profile for the external links).


I shall do more testing tomorrow with some normal calls but a couple I made to my voicemail earlier sound significantly better.


Given my hardware has not changed there must be a software setting in the iCloud backup which caused this issue for me. I'm tempted to do a restore from the iCloud backup to see if the problem returns. I had an iPhone4 about 4 years ago. I've not had an Apple phone since then. I wonder if the problem might be connected to my iCloud account having been last used with an iPhone4? Has anyone successfully moved from an iPhone 4 to iPhone 7+ using existing iCloud settings?


I think the important bit here is to "Setup as new iPhone" following a full reset.


A question for the people who have had multiple replacements...did you "Setup as new iPhone" or did you "restore from iCloud" each time?

I hope this helps everyone else having problems!

Dec 13, 2016 10:33 AM in response to ===Andrew===

That is interesting Andrew. But my iPhone bought in late September was my first ever one. And in one of the meetings with a Genuis we completely reset it and made a call using nothing of my backup or anything other than my SIM card and it was still bad. Also, I'm not sure if having to set everything up from scratch to get a phone to operate as its most basic function is something to be celebrated.

Although, good that a fix of sorts is available. Having to completely bypass the backup to get it to work is still something Apple needs to sort. Having (only temporarily in the end) moved from Android, I was impressed at how the backup from iCloud worked on all the handsets they kept throwing at me before I gave up. To buy a 7+ and then be told it won't work properly unless you bypass Apples own backup system is not good enough. Interesting update though

iPhone 7 Plus Phone Call Sound Quality

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