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alice-d
User level: Level 1 (4 points)

iPhone 13 Pro video recordings have electronic hissing sound after iOS update.

Hello! I have an iPhone 13 Pro. After an iOS update, a constant electronic hissing sound appeared when recording video. Initially, the noise was more pronounced on the front camera, but now it is present on the rear camera as well. However, the audio is clear when using Voice Memos or other audio recording apps.


I removed the case, checked the stereo sound settings, updated iOS, and ran the available diagnostic tests for the microphone and camera—the results were normal. The problem persists.


I would like help investigating a potential software glitch affecting audio recording following the update. I am currently unable to pay for repairs, so I ask that we first look into free diagnostic methods and software-based solutions. Please do not proceed with any paid repairs without consulting me first.

Posted on Oct 13, 2026 11:42 AM

2 replies

Jeff Donald
User level: Level 9 (64,078 points)

Oct 13, 2026 1:32 PM in response to alice-d

Specifically, what version of iOS are you using? What app are you using to record audio? What type audio are recording, mono, stereo or spatial? Are you using external or internal microphones?

alice-d Author
User level: Level 1 (4 points)

Oct 14, 2026 3:00 AM in response to Jeff Donald

I'm using an iPhone 13 Pro running iOS 27.0 (I also installed the subsequent update 27.0.1, but the issue remains).


I’m recording video using the built-in Camera app, and the same issue occurs in other video-recording apps. The audio is initially clear, but a loud electronic hissing noise sometimes suddenly appears after 1–2 seconds. It affects both the front and rear cameras.


Audio recordings made with Voice Memos and other apps that use the microphone without recording video are perfectly clear.


I'm using the iPhone's internal microphones, with no external microphone connected. I've tested both stereo settings, and the issue persists. In Mic Mode, Standard and Automatic produce the hiss, while Voice Isolation removes it. The microphone and camera diagnostic tests passed.


The problem started immediately after an iOS update. I suspect an issue with audio processing during video recording.

Originally posted at discussions.apple.com/thread/256375638