Do not carry it in your pockets to start with.
Maybe keep it in a ziplock at all times.
I have owned every iPhone and can not remember ever having dust under my screen.
Ok thanks, i thought the 6s dust problem via the silent switch was a known issue and was just what they did?
If you really believe dust is entering via the switch put a piece of tape over the switch. If you trim it nicely it will seal the open off and would be a nice test to see if "dust" is really entering there. I still have not seen any proof that the particles are dust.Yes you are right, it will, i was just thinking if there was a way to prevent it it would help