Noise from rear camera

[Incanus]

Maybe this is the same sound?

Light rattling sound when laying the phone down

New Fairphone 4, and I really like it. BUT: Is it normal that the camera (I suppose) has a short rattle sound when i lay down the phone on a hard desk? I also hear the sound when shaking the phone. It could be the lenses… Am I the only one? Is it normal (with a 580 € phone)? Do I have to RMA my new setup phone ?