


Apple responds to iPhone 17 Pro Max charging noise: Trickle charging is normal
Oct 13, 2025 pm 06:00 PMOn October 9, it was reported that some iPhone 17 Pro Max users reported that when using USB-C wired charging and the device power was at 0% or 1%, the phone would make a static noise similar to a "walkie-talkie".
According to relevant media reports, Apple’s official customer service responded that such current noise is normal because slight current noise may be generated during wired charging, especially during the trickle charging stage.
In response to this situation, Apple customer service provided two suggestions:
First, you can enter the phone's "Settings" - "Battery" - "Optimize Battery Charging", adjust the charging limit to 95% and try again;
Secondly, it is recommended to troubleshoot software problems - if noise occurs only when playing audio using a specific third-party application, it may involve a hardware abnormality. It is recommended to contact Apple after-sales for professional testing.
According to actual media measurement results, the entire iPhone 17 series (including the standard version, iPhone 17 Pro and iPhone 17 Pro Max) supports up to 40W wired fast charging.
What's more noteworthy is that the actual charging power even exceeds the nominal value, with a peak value of up to 60W.
It is reported that the iPhone 17 series introduces charge pump technology for the first time, which effectively improves charging efficiency and significantly reduces heat generation during charging.
At the same time, Apple also launched a new 40W dynamic power adapter, priced at 329 yuan.
This charger supports the AVS fast charging protocol, which can be regarded as an advanced version of the PPS protocol. Under the premise of successfully shaking hands with the AVS protocol, the overclocking output power can reach up to 60W.
The above is the detailed content of Apple responds to iPhone 17 Pro Max charging noise: Trickle charging is normal. For more information, please follow other related articles on the PHP Chinese website!

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