How long does it take to dry a smartphone?

My phone got some splash water. Unfortunately some water drops landed in the usb charging port. The phone gave me the error message that it detected moisture and i should dry it.

At some point the phone died because of low battery. I did not have charged it yet because of the concernings that the water and charging could damage the phone.

UPDATE: i used paper towels and let it dry overnight. I charged and there was no warnings.