I have the phone Huawei p20 pro after the manufacturer is the phone with an IP 67 protected against water and dust after the phone has fallen into my bathtub is the noise rushing the boxes is the normal way to go after the time or the boxes are broken
Possible that disappears after some time, maybe there's only residual moisture in it.
Water has come in through the socket, and it can take a long time until it's gone. Even "permanent" damage is possible.
Water proof does not mean that the part is "submersible".
This will go away after a while. ^^
If not then write to the Huawei support!
This is normal, that goes away, once a hair dryer in the cuddle hold and then you go
