After upgrade to iOS 26.4, averagePowerLevel and peakHoldLevel are stuck -120

We have an application that capture audio and video. App captures audio PCM on internal or external microphone and displays audio level on the screen.

App was working fine for many years but after iOS 26.4 upgrade, averagePowerLevel and peakHoldLevel are stuck to -120 values.

Any suggestion?

We're having the same issue with our camera app.

Hello Giroux, miamitwinz,

This is an issue we're aware of (FB22272504), but we're not aware of any recommended workaround so far. If you find something that helps you avoid the issue, please share it with the community by posting it here.

Even though we're aware of this issue, we still encourage you to open a bug report, and post the FB number here once you do. The specific info you include your bug report might help our investigation, and filing the bug report you to get notified when it is resolved.

Bug Reporting: How and Why? explains how you can open a bug report.

Thank you for reporting,

Richard Yeh  Developer Technical Support

After upgrade to iOS 26.4, averagePowerLevel and peakHoldLevel are stuck -120
 
 
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