Help With iPhone 8+

[coolcarcar99]

I have an iPhone 8+ that was purchased very recently, but about a week ago l, I noticed some white substance between the screen and antenna bands of my phone. I have not submerged my device in water or anything. Can somebody please help? Here is picture:

 

[Tkennedy1993]

Please supply the picture again. It seems like it didn't upload correctly.

 

[coolcarcar99]

Please supply the picture again. It seems like it didn't upload correctly.

I have a new picture here. Sorry that i didnt do this before. http:// And sorry that its instagram, its just the only way i could think of.

 

[rgd1101]

MERGED QUESTION
Question from coolcarcar99 : "iPhone Cleaning Help"

So, I’ve recently purchased a iPhone 8+, and I’ve noticed that some white gunk has accumulated between the screen, and the antenna bands.
This is a purely aesthetic problem, but it still irritates me. http:// that is the most noticeable place, but there are a few just like it. Is there any way to clean it? If there is, please tell me. Oh, and I have not submerged my iPhone in water.