How to fix an Apple iPhone 7 microphone that stops working after updating to iOS 11.4 [Troubleshooting Guide]

You can say that something’s wrong with your iPhone microphones if you hear scrambled audios during phone calls or when playing multimedia contents or worst, hearing no audio at all. There can only be two reasons as to why this happens. It’s either your phone is glitching or worst, damaged.

The main issue that’s tackled in this post is a microphone issue on the iPhone 7 that’s most likely attributed to a software error as it occurs after installing the new iOS 11.4 update. If you’re one of those who are having such trouble after updating iOS to the latest version, then this post might be able to help you out. Feel free to refer to this walkthrough whenever needed.

Before we move on to our troubleshooting, if you are looking for a solution to a different issue, make sure you drop by our troubleshooting page as we’ve already addressed some of the most common problems reported by our readers. Find issues that are similar with yours and use the solutions we suggested. If you still need our help after that, then feel free to contact us by filling up our iPhone issues questionnaire.

How to troubleshoot iPhone 7 with its microphone that stopped working

Before you troubleshoot your iPhone 7, check and ensure that the microphone is clean. If necessary, clean the microphones using a dry and unused toothbrush to clean the microphone grill at the bottom of your iPhone. Also clean the small black dot microphone located next to the rear-facing camera, if needed. Just slide the toothbrush over the microphones. Doing so will dislodge any stuck dirt, pocket lint, and dust. Alternatively, you can clean the microphones using compressed air. Just be sure to spray gently and far away from the microphones to prevent damaging them. After cleaning, test each microphone to see if it’s working. If not, then go ahead and troubleshoot further with these walkthroughs.

First solution: Reboot your iPhone (soft reset).

If you haven’t already, then you should restart your iPhone or perform a soft reset to refresh the operating system and clear any minor glitches from the internal memory that might have caused the problem. This won’t delete any data and personal information you’ve saved on your phone’s internal storage, thus no need to create backups. Once you’re all set, follow these steps to soft reset or restart your iPhone 7:

  1. Press and the Power button for a few seconds until the Slide to Power Off command appears.
  2. Drag the slider to power off your iPhone completely. Leave it off for about 30 seconds to 1 minute.
  3. After the elapsed time, press and hold the Power button until the Apple logo appears.

After the restart, test the microphones on your iPhone 7. You can start with both the front and rear mics. To do so, try to shoot two videos, one using the front camera and the other using the rear camera and then play back. If you hear audio in the videos, then it means the microphone is working.

After testing the front and rear microphones, test the bottom microphone. To do so, open the Voice Memos app and then press the large red button at the center of the screen to record a new memo and then play it back. If you hear an audio from your recorded memo, then it means the bottom microphone is working. If the microphone test failed or you don’t hear audio from your recorded videos, then move on and try the next applicable solutions.


Second solution: Reset all settings on your iPhone 7.

The next possible solution you can try on if the soft reset failed to fix the problem and your iPhone microphone is still not working fine is an all settings reset. This reset will delete all current system settings and then restores the original or default values. Any incorrect or invalid settings inflicted by the update will also be cleared. After the reset, you can configure options individually and accordingly. Here’s how it’s done:

  1. Tap Settings from the Home screen.
  2. Tap General.
  3. Scroll to and tap Reset.
  4. Tap to select Reset all settings from the given options.
  5. Enter your device passcode, if necessary.
  6. Then tap the option to confirm action.

Allow your device to finish resetting the system settings back to their default values. After the reset, it should restart automatically. If not, then you should trigger your device to restart to refresh its memory and operating system.

Third solution: Restore your iPhone 7 to factory defaults.

A full system reset is necessary if the microphone problem persists after exhausting all possible means there is to try on your end. It could be due to a more intricate software error that requires more advanced solutions. Please note though that this reset will delete everything from your device, including your critical data and saved contents. Should you wish to continue, don’t forget to back up your data beforehand. You can create a backup through iTunes or iCloud. Once you’ve secured the backup, follow these steps to master reset or restore your iPhone 7 to factory defaults:

  1. Tap Settings from the Home screen.
  2. Tap General.
  3. Scroll to and tap Reset.
  4. Tap to select Erase all content and settings from the given options. This will erase everything from your iPhone system including your saved data, personal information, settings, apps, and other contents. Any bugs and glitches are also removed in the process.
  5. Enter your device passcode, if necessary.
  6. Then tap the option to confirm action.

Wait until your iPhone resets and restores its settings to factory defaults and then you can proceed with the initial setup process. Any software issues including the problem with your iPhone 7 microphone should already be resolved by then.

You may opt to continue troubleshooting and try performing more advanced procedures if your iPhone 7 microphone still doesn’t work after performing a factory reset. The problem could be due to a more complex bug or system error that requires more advanced solutions like a recovery mode restore or DFU mode restore. Both these restore procedures would require the use of iTunes on a Windows PC or Mac computer. To avoid iTunes issues due to system conflicts, be sure to use the latest version of iTunes software on your computer. It’s also recommended to use a computer with an updated OS version.

Seek more help

If the problem continues after performing all the aforementioned procedures, then you may now take your iPhone to the nearest Apple service center and have it examined by an authorized technician. There might be some sort of physical or liquid damage on the microphone or other relevant components that needs to be fixed. While the problem might have instigated after installing iOS 11.4 update, the symptoms might have just occurred coincidentally.

Connect with us

If you need more help with the use of certain functions and features of the new Apple iPhone 7 smartphone, feel free to visit our Tutorial Page. There you can find a list of how-to contents, step-by-step tutorials, as well as answers to FAQs regarding iPhone 7. If you have other concerns or encountered some troubles while using the phone, you can reach us through this form. Just be sure to tell us more details of the problem or device issue(s) you may have and we will be more than happy to assist you further.

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