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I had the same issue on my iPhone 12 Pro...
Went back to the store, got a new one. Same f... issue. but only if it's charging.
Let's get a 3rd one now... I'll attach an audio file. ( I just put my iPhone 11 Pro max on the back of my 12 Pro)
On Mac, just right click and download the file.
 

Attachments

  • New Recording.mp3
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I had the same issue on my iPhone 12 Pro...
Went back to the store, got a new one. Same f... issue. but only if it's charging.
Let's get a 3rd one now... I'll attach an audio file. ( I just put my iPhone 11 Pro max on the back of my 12 Pro)
On Mac, just right click and download the file.
Your link doesn't work...
 
That sound is very similar to the “hissing” sound on some of the iPhone 7 back in 2016.
 
Device number 3 and 4 is here.
Both device making a hissing sound.
I'm just so exhausted with the whole thing... :(
 

Attachments

  • IMG_0311.JPG
    IMG_0311.JPG
    361.3 KB · Views: 128
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Device number 3 and 4 is here.
Both device making a hissing sound.
I'm just so exhausted with the whole thing... :(

So you’re saying you’ve had 4 brand new, straight out of the box devices and they all do it?!

Impossible.

The odds of that are astronomical... there will be different batches and I see no one else reporting this issue, so I’d suggest it’s something you are doing or something in your home or workplace causing it.

At this point go in store and get the genius to open the phone with you and test it.
 
So you’re saying you’ve had 4 brand new, straight out of the box devices and they all do it?!

Impossible.

The odds of that are astronomical... there will be different batches and I see no one else reporting this issue, so I’d suggest it’s something you are doing or something in your home or workplace causing it.

At this point go in store and get the genius to open the phone with you and test it.
I know, that is impossible, but i showed to my friends and they hear that too.

Apple support said i can get a refund, but I need an iPhone and not my money back.

I tried with another iPhone from my friend, he has a 12 128 White and IT DOES THE SAME!
 
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