A Q-tip with rubbing alcohol and a can of compressed air will do the trick.
Unless it left the factory covered in dust due to a manufacturing issued I doubt it.
But won't that push the dust into the phone?
Why not? Certainly they would rather someone make an appt for that than try something they read online that broke something.
Buy a cheap toothbrush and use that.
Because this is not an claim you can make under the warranty: that covers manufacturing defects. They could charge you to clean it...
Buy a cheap toothbrush and use that.
A hoover will work well!