I have a J7 Core, and I use a silicone case covered by hard plastic. The phone is too big to put on a lazy phone holder if it's got the case on, so I remove the case. When I remove the case, I am greeted by small quantities of this weird, transparent, thick liquid, and it leaves marks on my phone. It also brings both a pleasant and unpleasant smell. Seriously.
I have only one theory. I use it in the shower frequently because I like to listen to music or commentary on things, and because of the humidity it goes into my phone case and stays in the back of my phone.
I know I didn't provide much information but can anyone figure out why the hell my phone is "sweating".