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iPhone 6S voice calls not working, making shrill noise during calls, other issues

Hello and welcome to our latest #iPhone6 and #iPhone6S article. Today, we answer some questions regarding calls and sound issues. Like the previous posts, these issues were reported to us by some iOS users so we hope that you’ll find today’s article helpful.

If you are looking for solutions to your own #iOS issue, you can contact us by using the link provided at the bottom of this page.

When describing your issue, please be as detailed as possible so we can easily pinpoint a relevant solution. If you can, kindly include the exact error messages you are getting to give us an idea where to start. If you have already tried some troubleshooting steps before emailing us, make sure to mention them so we can skip them in our answers.

Below are specific topics we’re bringing for you today:

Problem 1: iPhone 6 making shrill noise during calls

Having a periodic very shrill noise problem when making cellular calls ( AT&T is the carrier). It just started about two weeks ago. No issue before then. No consistency as to when they occur, sometimes days/weeks apart. The noise obliterates both sides of a conversation and lasts for 20 to 40 seconds and then goes away. Wife’s iPhone also with AT&T doesn’t have same issue. Any ideas what I can do to eliminate this problem? Just installed iOS 11.0.2 today. — Bob

Solution: Hi Bob. A good troubleshooting step that you should do in this case is to let AT&T know. Since you are using their service when this problem occurs, there’s a chance that it’s a network issue and they have heard the same problem from other users. Minor bugs are usually discovered by developers and carriers this way so reporting it, even if there’s no immediate  solution, might still result to a fix at a later time. Remember, the more users report the same issue, the higher it goes in someone else’s priority.

To see if it’s a unique issue in your device only, consider restoring the phone as a new device and observe how voice calling works. This is the most that a user like you can do about this problem. To do a full restore, follow these steps:

  1. Create a backup of your files. You can do that in a number of ways but the fastest and most effective way is by using iTunes in your PC or Mac. If you don’t want to create a backup at all, you can simply erase everything on the phone by following the steps in this link.
  2. Connect your iPhone to your computer with the cable that came with your phone.
  3. We assume you remember your phone’s passcode so simply enter it when you’re prompted for it.
  4. Select your iPhone once iTunes asks you for the specific device.
  5. Once you’re in the Summary panel or screen, select the option that will restore your device (Restore).
  6. Confirm by clicking on Restore button.
  7. Wait for a few moments while iTunes restores your device to its factory settings. It may also take some time if iTunes will need to install an updated operating system version.
  8. After this factory reset, all software settings should be restored to their defaults.

If you happen to be using a third party Phone or dialer app (and not the stock dialer app), try switching to another app or just use Apple’s own Phone app. The problem may be caused by an unknown app bug.

Problem 2: iPhone 6S plus showing screen discoloration, lag during calls

So I bought this iPhone 6S plus around a month ago, and the case is pretty similar. Around about 30 days after purchasing, I’ve experienced weird stuffs like screen suddenly error and turns into blue lines, but it goes fine after i lock-unlock the phone. But after that process, the sound gone missing in addition of major lagging. Yes, I have executed a hard reset, a factory reset with restore, and factory reset with no restore (as a new iphone), and i waited without doing anything and the problem persist. No sound and major lagging, sometimes with blue lined screen. When i said major lagging, it reaches the level of total-unfunctioned where i can’t even reach and make a call, all the apps, the ringtone, everything. Is it possible that I bought a fail-produced iPhone considering hardware is the only answer? — Hessa

Solution: Hi Hessa. With millions of iPhone 6 and 6S produced, there’s always a chance that a few will not work as expected. Since nothing has changed after you’ve done factory resets, bad hardware must be the sole reason to blame. Also, any discoloration of the screen almost always means a hardware malfunction so if blue lines on the screen persisted after factory resets, that’s definitely not normal. As you can’t fix bad hardware with software tweaks, the only way to solve your problems is repair, which means sending your phone to Apple or to an independent service center.

Problem 3: iPhone 6S voice calls not working

Hi. I am not able to do any calls or receive calls from my iPhone 6S. what’s the problem I was not understanding. I called to my network customer service from another number and they have told me that every thing is fine and my network is in active status. So, they have told me that the problem will be in my mobile. So, please help me from this. I’m unable to make any calls or receive calls for 4 days. — Rowthurajesh11

Solution: Hi Rowthurajesh11. One way to check whether or not there’s an account or network issue is by inserting your SIM card (if you’re in a GSM network and not CDMA) to another device. If you can make and receive calls in another phone using your SIM, that’s a clear sign that the issue lies in your device itself.

Below are the things that you can do to try and fix the problem.

    1. Verify that Airplane Mode is disabled. Some users usually forget to disable Airplane Mode after turning it on. To turn it off, go to Settings and turn on Airplane Mode, wait five seconds, then turn it off.
    2. Check Do Not Disturb Mode. Another good thing to verify is Do Not Disturb settings. Do Not Disturb prevents the phone from making notifications and alerts, and allowing calls from coming in. To check it, go to Settings>Do Not Disturb and make sure it’s off.
    3. Verify if you’ve blocked phone numbers. If you’re unable to make or receive calls from a particular phone number, there’s a chance that said number may have been included in your block list. To see if that’s the case go to Settings>Phone>Call Blocking & Identification.
    4. Verify if Call Forwarding is enabled. Call forwarding is often a value-added service, which means that it can only be enabled by your carrier for a fee. If you are not sure if you’ve turned this feature on before, here’s how to check: go to Settings>Phone>Call Forwarding and make sure it’s off.
    5. Install iOS and app updates. We have no idea what the current state of your phone’s software is, nor do we have any information about its history. There’s however a chance that the problem is being caused by an incompatible app or an unknown iOS bug so try to see if you can fix it by installing app and operating system updates. To check if there’s any available update, just go under Settings>General>About.

 

  • Do a full restore. If all else fails, it’s always advisable to factory reset your device (Restore). If you haven’t tried doing a restore before, kindly refer to the steps above.

 

Problem 4: iPhone 6 making noise distortion while in a call

Hi. My issue is a terrible Noise distortion while trying to make a call. it’s not the first time it happened and due to a cracked screen previously I thought that was the problem, but I’m not so sure now because this iPhone I have now is a couple of months old. now that’s all and is doing the same thing again and I’ve not done anything to the phone at all. No damage. Please help as I’m worried that I will have to replace again and I have no funds to do so. Many thanks. — Karen Coyle

Solution: Hi Karen. Your issue may be similar to Bob’s above so please check and do our suggestions for him. As your phone’s hardware has already been opened before, there’s also a chance that the current situation may be an effect of bad hardware gone wrong. If a factory reset won’t help fix the problem, your only other recourse is service.

Problem 5: iPhone 6 lower down sound volume on its own

My iPhone 6 keeps turning the volume down on its own. I have gone into Settings> Sounds and turned off the toggle switch that says “change with buttons” and it is still doing it. It doesn’t happen every time (but enough to be annoying) when I press my home key to check for messages, etc. I thought it might be getting touched by my case, so I cut out around the switches enough where they’re not touching. I haven’t even attempted to play music or anything on my phone, yet. I’m sure it’s a software or hardware problem. Is there anything I can do? — Charla Lewis

Solution: Hi Charla. Sound volume is not supposed to lower down on its own so there must be something that causes the phone to do it. Try to remember if you did anything different before this problem started happening and try to undo it. For example, if the issue started right around after you’ve installed a new app, it’s possible that said app may be poorly coded, causing the problem. 90% of cases similar to yours are due to content or apps so make sure to see if one of the installed apps is to blame. Better yet, do a full restore and see how volume works when there are no third party apps installed. This way, you can see any difference.

 


Engage with us

If you happen to have a problem with your own iPhone, let us know about it and we will do our best to post them and their solutions  in our upcoming articles. You can use this link to contact us for assistance. We can’t guarantee an answer to every question but rest assured that we will exhaust everything on our end to help you.

Be as detailed as possible when describing your problem to help us diagnose your issue easily. If you can include error messages, popups, attempted troubleshooting steps, and circumstances leading to the problem, that would be very helpful.

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