A rattling noise when tapping the back camera area of an iphone 15 pro

Thank you very much for your advise and immediate responding .

I've read little bit more info on iphone 15 pro camera layout and those are my findings,

1).Main camera(48MP)is equipped with 2-gen sensor shift Optical image stabalization and doing the job more quieter and better .

2). Telephoto camera (12MP-@upper edge) is equipped with both sensor shift image stabalization(2x) technology and Optical image stabalization (3x) technology

3). Ultra wide (12MP)

-(info @ apple iphone 15 pro specifications page)-

So along with above details and according to what I've experienced ,when tapping the upper edge of camera area I heard more noise than the rest. Means the more sound on telephoto camera. On my further readings on "OIS" systems,(not sensor shift) i found that the stabalization is done by electro powered winded coils and permanent magnets attached to the camera unit(module) and spring hold lense, so when the camera is not activated the lense is free to float when shaking.

and making noise (rattling).even the sensor shift OIS system(sensor)also free to float when it is not activated but more quieter than OIS I think.

Along with above mentioned findings I thought that this rattling is due to the image stabalization technology on iphones and In addition to that , I looked to some of my friends' units and experienced the same. Camera works fine.

Plz correct me if I am wrong and others plz be kind enough to share your experiences regarding the same issue .

Thank you!

(I am not a tech specialist ,just read some articles regarding the issue what I've faced)

Rattling is considerably quieter when shaking .