iPhone 13 static noise on recorded video/audio

Hello, I have 2 iPhone 13 blue and pink (wife’s).

On blue one I have static noise on recorded videos or audios. It can be noticed if making record at home in silence or if there are not much other sounds.

Interesting that sometimes records are clean, sometimes first 2-3 second with static noise and after it’s clean record (like noise cancelation turned on).

I have tired record on with front mic only, back, bottom and stereo (in filmic pro you can choose mic) and when it’s noisy, it is noisy on all mics.

I tried hard reset, stereo mode on/off, restricting mic usage for all other apps, nothing helped.

I don’t know if it’s software or hardware issue, hope the first one, because as I said, sometimes it’s ok, like noise cancellation working as it should be. I will wait ios update 15.2, maybe it will fix the issue, otherwise will go to the local iphone support.

On the pink one everything works ok, no issue.

Haven’t found anything related to the iPhone 13/Pro/Max on the web. So maybe someone else having the same issue?