Myself and my parnter have Saumsung phones and since the last update a couple of weeks ago keep getting Moisture/Foreign Object warning when charging. We have followed fixes on YouTube and on here will some working for 1 charge then it does it again.

We have tried clearing the USB settings cache and date, safe mode charging, turning off when plugged in, forced stopped apps. Short of the phones going through the window don't know what else to try.