Here are the good news for every phone user.Phone don’t die upon immediate contact with water.meaning that it can be fixed when there is significant damage but it has to be done very fast and take the right steps.
What happened to the phone when it falls in water
Once water enter inside the phone,it flows into the circuits.The result cause the water to act as a conductor.It carries a current which then overload the phone with so-much energy that burns the circuit board.
There are certain method that worsen the phone.Having water sit on the phone lead to corrosion of coil and resistors due to minerals in the water.Water might take time before it reached vulnerable components.That is why a phone can be drop in a water and remove immediately without noticeable effects.
Another thing to note is the source of water.When your phone is drop in a toilet or puddle,it is bad but dropping it in an ocean water is saying goodbye to the phone.The reason is that salt water is highly corrosive and can damage a phone components more than fresh water.