Rattling sound iphone xs

Same problem here. There’s a weird sound coming from the rear camera when shaking the phone. The sound is still there when filming and shaking, also you can hear it when playing the video. But who shakes their phone when shooting videos ^^ ? Just wondering if this is a normal..

If that happened to me, I would take it to an Apple Store or Authorized Apple Service Center for an assessment.

(I also own an iPhone XS.)