Rattling sound when shaking the phone

Dear All,

When I try to shake the phone (version N920C), I can hear a rattling sound (like a piece is moving inside the phone).

Unfortunately, some days ago I accidentally dropped the phone.

I know that this sound should due to the "optical image stabilization" (in fact, if I open the camera app, this sound is almost inaudible) but I was wondering if that sound was there before I dropped the phone or not. This is the doubt I have right now.

Just to be clear, the phone is working fine in every way. The camera is working fine like before and the optical image stabilization as well.

In your opinion, could the drop of the phone had increased that rattling sound?

It's a little bit annoying.

Thank you in advance.

Regards,

Manuel.