Chosen Solution

Does anyone know what the silver stuff is on the inside of the body that appears to be sprayed on? It’s on all the screw holes, behind the speaker, under the rear camera area, & under the WiFi antenna.

@jones76 @benjamen50 if you are referring to the swirl markings etc. (pointed out in the blue rectangles)

those are from machining the case. Most like done via a CNC milling machine….. If you are referring to this stuff

it is most likely adhesive and has no functional issue.