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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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Question marked as Top-ranking reply

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

Apr 18, 2017 7:33 PM in response to Steven Fisher1

Possible solution:


I just purchased 3 new iPhone 7's about 4 days ago. My wife and I just upgraded from our aging 4S's, my daughter from her iP6. Immediately my wife and I noticed muffled sound, and periodically when talking on the phone, I experience some of the issues noted in this thread: most notably the issue where it sounds as if I'm on speakerphone when in fact I'm not, and it is difficult to hear the caller. My wife and daughter have not had this issue, however a friend of mine also just got an i7+, and has complained about exactly the same thing.


First of all, there are 2 issues being discussed on this same thread: one is the sound you hear when talking on your i7, the other is the sound the person on the other end hears. I am ONLY referring to the sound I hear, as so far I have had no complaints about the latter.


Anyway, I went into Settings> General> Accessibility> Hearing, then selected "Mono Audio", and De-selected "Phone Noise Cancellation". Time will tell, but so far this seems to have made a significant improvement. Fingers crossed...


If anyone else tries this, and it fixes their problem, please post results.

Apr 20, 2017 7:57 AM in response to pinosvalle

I complained to Verizon in NY about the poor phone quality and lack of reception of DTMS signals. They checked out their network with my phone and concluded it was hardware. I was told to get a new phone. Apple checked it out and said phone was fine - even though MOST of the people I speak with complain. I convinced them to give me a replacement phone - it is still terrible! Now I am reading I won't be able to get a new phone from Verizon because of the s/n change. This is without question a hardware issue! This is the second Apple h/w issue I have had with Apple products they won't own up to. I think this time we "old" users start to use other products! AppleCare can't figure anything out- the fact is the iPhone 7 plus is first A PHONE and it is failing that task miserably

Apr 24, 2017 11:28 AM in response to nibs84

Not really. I am not having problems on every call - maybe around 50% of them. I returned to my cellular provider (Rogers in Canada), and he changed out my SIM card, and made a few other changes, but I am still experiencing the echo effect, and the sound as though it's on speakerphone. Haven't had anyone complain of me dropping off yet. The guy at Rogers told me if that didn't fix the problem, then exchanging the phone would be the next step. I will likely go that route.

Apr 24, 2017 4:08 PM in response to alfish_vinberg

This is a continuation of my Apple iPhone 7+ saga. I was told by many people, AFTER getting my replacement iPhone 7 plus from Apple, that the quality of my calls has not improved. I called up AppleCare (again) and was told that since the original phone actually passed all their tests they would not be giving me a third phone but would want to investigate the situation in depth. How they were to do this has NOT been answered BECAUSE THIS IS MY TIME THEY ARE PLAYING WITH! They want me to back up the phone, wipe it out and then try it again to ensure there is no app on the phone causing the problem. The senior support person was definitely friendly BUT he completely ignored the fact that there are MANY complaints about this problem on the forums. I don't have time to fiddle around spinning my wheels. There is OBVIOUSLY a problem which they don't want to own up to. The fact some people don't have the problem, they say, indicates it really isn't hardware. BUT the problem occurs with the other end of the call. The NON-OWNER of the phone is having the problem. The owner, ME, doesn't hear the problem. So how many owners aren't calling because they are completely unaware of the problem? I am angry! I spent $800+ for a phone that doesn't do what a phone is supposed to do! I don't just want another phone! I want the phone to make calls.


To answer questions raised by others - NO, THE SITUATION HAS NOT IMPROVED!!!! The phone stinks. STINKS!

Apr 24, 2017 4:23 PM in response to alfish_vinberg

Interesting point you bring up that it's the NON-PHONE owner who is actually having the problem. I wonder if any curious Apple techs would find better success by approaching it from that end?? It certainly is a perplexing phenomenon and one that is enormously frustrating to those in the unfortunate position of having to deal with it. Please let us know if you come across anything that looks promising towards a resolution.

May 9, 2017 1:20 PM in response to Steven Fisher1

Hello, I also have issues with my iPhone7. Previously I had no problems at all calling with my iPhone6, but with this phone people keep on telling me that they can't hear me or that my voice disappears. Initially I thought it was the head set, but I'm hearing it so often now while using the phone without a head set, that I'm getting annoyed about it. I've already turned off noise reduction and took the case off, but it's still a problem. Tomorrow I'm going to visit a Genius Bar here, in the Netherlands. Hopefully they can help, because after using iPhone7 for 4,5 months, I really regret buying this phone.

May 18, 2017 8:17 PM in response to GertiNL

I will only say I am VERY skeptical. Yes, I would be very happy if it were true, but again, I am very skeptical. The issue has not been corrected I do not have the time to backup the phone, wipe it out and then bring all my apps back one at a time, testing each one to see if the problem reoccurs. I find it very interesting NO Apple employee, has jumped in to deny this is a h/w problem. L

May 23, 2017 4:18 AM in response to Steven Fisher1

I had the same problem too, and drove me crazy till...


In a problematic call I've made some experiment and maybe I've found the issue:


Removing the iPhone from the cover (a very lightweight transparent rubber cover) the voice became perfect!

After remounting the cover the issue came back! I've done the test more times and every time: voice clean without cover / voice bad with cover.


The cover have holes in front of mic and speaker but maybe enveloping the iPhone change in some way the resonance of the case, making the sound worse.


I hope could help.

May 23, 2017 6:45 AM in response to Taro-71

Taro-71 wrote:


I had the same problem too, and drove me crazy till...


In a problematic call I've made some experiment and maybe I've found the issue:


Removing the iPhone from the cover (a very lightweight transparent rubber cover) the voice became perfect!

After remounting the cover the issue came back! I've done the test more times and every time: voice clean without cover / voice bad with cover.


The cover have holes in front of mic and speaker but maybe enveloping the iPhone change in some way the resonance of the case, making the sound worse.



There is an addition mic on the back of the phone, near the camera. This is used for noise cancellation. If it is covered you will have a problem with sound quality. You can try turning off noise cancellation when the cover is on the phone: Settings/General/Accessibility - scroll down to Phone Noise Cancellation.

May 23, 2017 6:55 AM in response to Lawrence Finch

Mine cover is open also there.

I've also tried to deactivate the Phone Noise Cancellation before but only a little improvement was the result.

Removing the cover instead changed everything also reactivating the noise cancellation.


On my iPhone 7 Plus it's like that the "skin" cover make the mic become dull like the phone is in a box.

Maybe because the cover is removing the vibration of the phone shell itself.


Really strange but believe it or not, it works every time :O

iPhone 7 Plus Phone Call Sound Quality

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