As far as I can tell the reusable part is misleading. I did the first phone perfectly fine, but the second phone had a piece of dust blow in behind the cover. I was unable to "clean" the cover. Maybe reusable is talking about the phone, or should be removable. In any case I recommend getting a couple of these just in case. They are usually cheap compared to shipping and handling to get a second if the installation doesn't go perfectly.