Water damages components and may short-circuit your phone. However, it is possible to save many water damaged cell phones. Before you spend hundreds of dollars replacing your water damaged cell phone, try fixing it. No method is completely successful since every phone is different and the results depend on the amount of damage done. Keep in mind that salt water does significantly more damage and the longer a phone is submerged in any water, the more damage.
Turn phone off immediately if it's on. Remove the battery and SIM card. Dry the phone, battery and SIM card with paper towels.
Use a can of compressed air if available to continue drying the cell phone and accessories. A wet-dry vacuum also works well to pull the water out the same ways it went it.
Fill a bowl or other container with dry rice. Submerge the phone, battery, SIM card and any accessories in the rice. Leave them there for at least 12 hours before you try using the phone.