Like an "old radio": User reports of charging noises on iPhone 17 Pro Max
There may be electromagnetic interference in Apple's most expensive current iPhone. How widespread the problem is remains unclear.
iPhone 17 devices, here the 17 Pro.
(Image: Sebastian Trepesch / heise medien)
Users of iPhone 17 Pro devices – particularly the Pro Max variant, it seems – are reporting strange noises when charging their devices. An eleven-page thread in the official Apple support forum has gathered affected users. The issue: When the device is charged via USB-C and a power adapter, and music, a video, or a podcast is played, a crackling, hissing, or "buzzing" sound can be heard – at least when the iPhone is held close to the ear – which users describe as "like an old radio." However, the sound only occurs when the volume is turned down. In other cases, the interference noise can still be heard even when no audio is playing – but it is quieter in this case.
Also with Apple Cables and Chargers
"It's as if the speaker is turned on and could produce sound, but since the volume is at zero, you only hear static. If you watch TikToks without sound, you'll hear it even more clearly," writes one affected person. The problem cannot be attributed to faulty chargers or cables – it apparently also occurs when original Apple technology is used.
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The first reports emerged shortly after the iPhone 17 went on sale in September. It remained unclear whether the problem only occurs in certain countries – as different power grids are used depending on the region. Apple support staff are said to have indicated that it is not a hardware defect, but rather a software issue.
A Firmware Problem?
A even longer discussion on Reddit suggests, among other things, that it could be "interference" between Apple's built-in power management components and the audio codec used.
"Apple should therefore revise and optimize the audio codec or amplifier control via firmware to eliminate these interference noises during charging." Other users, in turn, claimed it could be due to the respective household electrical system or the power outlet. Apple has not yet made a public statement – it remains unclear whether it ever will.
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