Whenever I plug charger after few minutes of charging warning comes( moisture detected).

what is this?

Oreo aa gya s7edge k liye.. check..

when will s7edge get Nov security patch?

on 26 sep I take my phone to samsung care for back glass replacement but after that my front camera is not taking good pictures, it's worst then chinese phone.see some sample below, is this a software or hardware problem.please help guys