Default Dropped my phone for the first time (noticed a rattle)

Dropped my phone for the first time today. Nothing major, was sitting down, it slipped out of my hand and I spent what seemed like the next 15 minutes juggling with it before it landed on the floor and slid across the room.

There's no real damage to it (a 1mm dent in the corner which nobody apart from me would notice) but when I picked it up and shook it, it rattled a little.

Anyway my question is, Does your phone rattle? Is this possibly the gyroscope or whatever is inside that takes care of orientations? The 'rattle' may well have been there from the beginning and I just didn't notice because I had no reason to shake it next to my ear lol.

Thanks