Something sounds loose in my Xperia Z3 Compact, is that normal?

[kmflame]

Something sounds loose in my Xperia Z3 Compact

The thing is, I went to an amusement park, and in a game my phone was shaking a lot and I noticed like something was moving inside.

So after i was at home again I tried replicating the issue again, I shaked my phone and yeah it feels like something is moving inside.

Is that normal?

I tried replicating it on my old Xperia Z1 and nothing happened.

Thanks again.