Samsung Galaxy Z Fold4 Notes On Usage page 10

Do not let the product get wet with
liquids (drinking water, sweat, seawater,
pet urine, etc.).
No liquids
May cause fire, burns, injuries or electric
shocks, etc.
For waterproofness, refer to the following:
uP.37 "Precautions for Waterproofness"
Do not put liquids (drinking water,
sweat, seawater, pet urine, etc.) into the
charging jack or the external connection
No liquids
terminal.
May cause fire, burns, injuries or electric
shocks, etc.
For waterproofness, refer to the following:
uP.37 "Precautions for Waterproofness"
Use the optional equipment specified
by the Company for the product.
If you use something other than the
Do
specified equipment, or if the manufacturer,
distributor, or specifications are unclear,
then doing so may cause fire, burns,
injuries or electric shocks, etc.
8
Notes on Usage