Turn off the iPhone immediately
Remove the case and any accessories
Unplug all cables and accessories
Hold the iPhone with the Lightning/USB-C port facing down
Gently tap the iPhone against your hand to help dislodge water
Wipe the outside with a soft, lint-free cloth
Leave the iPhone in a dry, well-ventilated area
Place it near a fan blowing cool air
Do not use heat
Do not use rice
Do not charge the iPhone until it is completely dry
Wait at least 24 to 48 hours before turning it on
If water exposure was significant, contact Apple Support or a repair professional