Summary:
Some iPhone 18 Pro users said that the phone speakers make abnormal crackling sounds, slight ticking sounds, or random popping sounds. Related complaints appeared on the MacRumors forum and Reddit. Affected models appear to include iPhone 18 Pro and iPhone 18 Pro Max, with the problem mostly occurring in the earpiece speakers.
Some users say the noise occurs continuously, while others say they only hear it when using apps, browsing the web, receiving notifications, pop-up keyboards, or making calls over cellular networks. On some devices, quickly switching airplane mode on or off or quickly adjusting screen brightness may also trigger abnormal noises.
Apple recently released iOS 27.0.1 to fix an issue that may cause the iPhone 18 Pro to restart when Face ID authentication fails, but the update instructions do not mention the speaker failure. User feedback shows that the noise persists after installing the update. Some users said that after replacing the problematic mobile phone, the same problem still occurred with the new phone.
It is unclear whether the fault is from hardware or software. If the problem is caused by software, Apple may fix it through future system updates.
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