iPhone 17 Pro Max buzzes when charging, even replacement

Hello,

I am writing to report an ongoing issue with my iPhone 17 Pro Max.

I purchased a brand-new iPhone 17 Pro Max about a week ago. From the very first time I took it out of the box and started setting it up, I noticed a strange buzzing/humming noise, mainly while charging. I used the phone for around five days, but the noise was consistently present and quite irritating. I had the 80% charging limit enabled, and when the phone reached that level, the buzzing sound was clearly audible.

Since I was still within the 14-day return period and I also have AppleCare+, the device was replaced without any issues. Two days ago, I received a completely new, unused replacement device that had not been activated and had 0 charge cycles.

Unfortunately, this replacement phone behaves exactly the same way. The same disturbing buzzing noise occurs during charging. I have tested multiple power outlets, different chargers, different cables, and even charging through a MacBook, but the noise remains unchanged in every case.

At this point, it is quite frustrating, especially after receiving a replacement device that exhibits the same problem. I would appreciate clarification on whether this behavior is considered normal for this model, or if there is a known hardware issue affecting these devices.

iOS 26.2.1

Thank you for your assistance.