Why is there a rattling sound when I shake my device?

Information / Solution

You might hear a rattling sound when you shake your device or tap on one of the corners. This is an expected behavior caused by a certain component inside the phone.

The camera of your smartphone uses "optical image stabilization." Since the lens unit cannot be fixed when the camera is not working, when the smartphone is shaken, the unit hits the cushion structure in the camera unit and makes a rattling sound. This is a mechanical specification and is not a malfunction. In addition, thorough product reliability tests have been conducted, and this phenomenon does not lead to failure.

You don`t need to worry that there is anything loose inside the phone as long as the unit has not been abused abnormally, e.g. dropped, thrown, etc.

What is the optical image stabilization function?

This function keeps the lens unit, which consists of everything from the lens to the image sensor, in a floating state and moves the entire lens unit to correct camera shake and reduce image blur.