Ipad 8th Gen Makes wield buzzing noise, 3 BRAND NEW IPADS, SAME BUZZING NOISE

Hello,

I have been noticing a small buzzing noise sounds like electric current coming out from my ipad 8. the first unit i got was in December,2020. Brand new unit from Apple store. It had the same buzzing when I put my ear close but I didn’t really care much back then. It was a 32G unit and I felt the storage was not enough, so I returned it and get a 128GB. It had the same buzzing sound, sounds like electro current. (Again, same location, you have to put your iPad horizontally, home button in the right side. Put your ear at top and you can hear a buzzing noise) today I had the chance to get another brand new unit, iPad 8 from apple store, it had the exact same issue with the other ones. Three of the iPad were completely brand new out of box, all running on iOS 14,Model number A2270.

the issue is not a dealbreaker but when you are in a quiet environment, you don’t need to put your ears closer to the iPad you can hear it. Mine was Most obvious when running the app Calm, and GoodNotes,

Sometime Settings. . I took my iPad to the genesis bar yesterday and everything is fine, but they told me they never seen anything like this before. It makes me wonder the reason behind this buzzing sound and if this bunch of the model A2270 are experiencing the same buzzing noise( at least it seems to me that this is the case, since all of the three iPads did experienced the exact buzzing noise.)

ipad are still fantastic devices but I would wish Apple can release a software update to fix the buzzing current sound.

thanks and happy new year,

Frank