Razr has dust IN screen

Slide a needle under the edge of the screen and lift it off, clean out the dust and such and then just carefully push it back in place. I just finished doing the same thing on mine.

as far as the outside screen you should take it apart if you can and check the connector is their lose(theirs a solution for this if you need it)don't do it if you ain't got insurance if you do take it to your provider to check it, as afr as the dust I'm not totally sure but you i think you can take it off and clean it but you need a certain type of cleaning fluid probly the one for computers but I'm not sure as to how to take it off sorry.