Take the phone out of the water as soon as possible.

Note: If the phone is connected to a wall charger and is also submerged in water, do not attempt to remove it from the water until the major power circuit breaker is switched off.

Quickly dab the phone with dry towel, while at the same time removing the battery cover and battery.

To find out if the phone is truly water-damaged, check the corner near where the battery is — there should be a white square or circle, with or without red lines. If this is pink or red, your phone has been water-damaged.

Remove the SIM card. SIM cards survive water damage well, but getting it out immediately makes good sense. Pat it dry and set it aside to dry out until you reconnect your phone to your cell network again.
Remove the ear buds, memory cards, as well as any phone cases or protective covers. Remove all plugs that cover the gaps, slots and crevices in the phone to expose them to air-drying.
Gently wipe off as much water as possible without dropping the phone. Avoid shaking or moving the phone excessively so as to avoid moving water through it.
Use a vacuum cleaner to suck the liquid out of the inner parts of the phone. Hold the vacuum cleaner over the affected areas for up to 20 minutes, for each accessible area. Don’t hold the vacuum too close to the phone, as a vacuum can create static electricity, which is even worse for the phone than water.

Do not use hair dryer to dry out a phone as this may force moisture further inwards toward the crevices. You can however use a heater, fan or other air-flow device to blow air across the phone’s openings to aid drying.

Put your phone on a sunny spot to help it get rid of any water in very small places.
Test your phone. After you have waited at least 24 hours or longer if needed, check to see that every area of your cell phone is clean and looks dry. Check all the ports, compartments and in between crevices for any moisture or dirt. Wipe away any dust and dirt from the device and covers, and insert the battery into the phone. Attempt to power on the device, listening for odd noise and observing to see if the phone appears to function correctly.
Plug it into its charger without the battery if your phone is completely dried out, but still does not work. If this works, you will probably need a new battery.

Nice thanks

I remember when rain beat my friend n d phone come soak.na so she light stove put am on top,within 30mins d phone don roast finish