Working with phone in pocket with a lot of heat/sweat?

Hello guys. I am worried about leaving the phone in my pocket while I work, because my job is a very active one, on a very hot country in the summer, so sometimes I see moist on the screen when I pick up the phone. I try to turn it with the front facing the outside of the body, but not always. I maybe paranoid but the speaker on the mxp lately seems to be with the volume slightly lower.

My moto e 2015 damaged the speaker this way, and had to be replaced. I know the mxp has some sort of water protection but not much.

Shall I be concerned?
What do you guys do to prevent this?