Apple will fix bug affecting iPhone 7 and 7 Plus microphones

Some models running iOS 11.3 are experiencing the issue.

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Xinhua News Agency/Getty Images
Xinhua News Agency/Getty Images

Some iPhone 7 and 7 Plus models running iOS 11.3 or later are experiencing an issue with their microphones. Some users have reported that after updating, their phones' microphones stopped working, affecting voice memos, calls, FaceTime and speakerphone. Some also reported that Siri was no longer accessible. But Apple has apparently acknowledged the problem -- though not publicly -- and an internal document obtained by MacRumors instructs Apple Authorized Service Providers how to proceed if faced with an affected phone.

The document notes that in some cases the phones' speaker buttons will be greyed out and service providers should first ask customers to disconnect any Bluetooth accessories connected to their phones. If that doesn't help, they should run audio diagnostics. In the case that "device could not detect dock" or "accessory not supported" alerts come up, the service provider can repair the phone. MacRumors also reports that if the affected iPhone 7 or 7 Plus is no longer under warranty, Apple says the repair providers can request an exception for this issue.

The document is apparently light on the details as to why this issue has come up. But since a repair might be warranted it seems like the software update is leading to a hardware defect. MacRumors says it verified the document -- which was distributed to Apple Authorized Service Providers this week -- with a reliable source and suggests that users escalate their cases to a senior AppleCare advisor if repair technicians say they can't fix the problem.

Last month, Apple released an update that addressed a bug causing some replacement displays to be unresponsive to touch.

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