2. Remove all peripherals from the device (back cover, case, battery, headphones and any other removable gadget).
3. Use a vacuum to drain moisture from the device (Try to get as much of the water out of it as possible).
4. Use a substance with a high affinity for drawing out moisture (An inexpensive option is to place the phone in a bowl or bag of uncooked rice or desiccant “usually found with new shoes” for at least 24hrs or just cover the phone in towels).
If the above steps fail, kindly refer to a professional phone repair with a history of success around you.