Well, if it has been in water for just seconds, that'd be ok, but for several hours, not a good at all. There is little hope but try to save it.

Don't try to turn it on. That would cause short circuit and could kill it

Take off the battery as soon as possible.

Dry the iPhone and the motherboard as much as possible. That won't dry it at 100%.

I guess you don't have pentalobular screwdriver to do so, thanks Apple to let our iPhone die.

If you don't have one, get the iPhone 4/4S Liberation Kit, and change the pentalobular screws for standard phillips.

I strongly recommend you to buy the Thirsty Bag and follow the instruction thirsty-bag. It would completely dry it, if it's not too late.

Change the battery.

Give us some feedbacks

We, at Florida iDoctor, do things a bit differently in terms of addressing water-damaged smartphones that make their way into our shop. You see, we are located in Palm Harbor, Florida and only a stones-throw away from the beach!

Of course, the first thing we tell our clients is IF your phone hits the water, to get it to us asap. Rice can work okay in a pinch, but the actual success rate using a bowl of rice is quite low if it were scientifically studied. Fresh water is bad for any smartphone. Pool water (with chlorine) is the next worse type of water infiltration. The most caustic of all water is salt water. Water with high levels of NaCl (salt) is very damaging to electronics due to the high level of corrosivity. Our recommendation is if your phone falls in salt water, to actually rinse it off under tap water in order to try and wash away some of the salt residual. We also ask them to remove the battery (if possible). One word of extreme caution...DO NOT, I repeat, DO NOT try and power on your phone to see if it still works no matter how tempting that may seem. You are certainly likely to short out motherboard components if current is applied through the circuits of a water-logged phone.

With that being said, once a client brings us their water-logged phone, the first thing we do is remove the battery. We then tear the phone down to the basic components (battery, frame, motherboard, cameras, etc). Once it is taken apart, we place the motherboard in an professional-grade ultrasonic cleaner using a proprietary dielectric cleaning fluid. This is one of the keys along with making sure the fluid is heated up. Once the board has come out of the ultrasonic cleaner, we rinse it off thoroughly with a deionized (DI) water. DI water is ultra pure and this rinse step will ensure that there are no trace contaminants on the board.

We then take the clean motherboard and put it into a container of desiccant along with all of the other components of the phone. We use a proprietary desiccant with the highest adsorption rate of any desiccant available on the market. This is super-critical so that you can wick away any moisture from the motherboard and the components as quickly AND EFFECTIVELY as possible.

We let everything sit in the desiccant for 24 hours to ensure complete moisture removal. Once complete, we reinstall all of the components and also install a NEW BATTERY (NOTE: We recommend never reinstalling the same battery once it has come into contact with water).

I hope this helps the readers of this great guide. We utilize iFixIt every day in repairing phones in our shop and therefore, we believe in contributing to this guide. If anyone needs further help with this process, simply let us know. Since our store is located near the Gulf of Mexico in Palm Harbor, FL we see water damaged iPhones in our shop every day. This process we listed here has achieved over a 74% success rate in restoring water damaged iPhones.

Rick

Florida iDoctor

1, the first time, removing the battery, not to the other keystrokes.

2 If only a few seconds of contact with water, slowly drying with a hair dryer, a day later on the battery and try to boot

3, if the opening is not, then go to the repair shop to repair. . Good luck,

A good mobile phone repair parts store; go for a search,

What you should do is put in rice for a day or two and hopefully the rice will suck out most of the water.

Best thing to do is to bring it to a repair shop asap and not turn it on because if you wait too long corrosion will start and even the screws will rust. If you do turn it on it might short out the logic board and you will have several problems with it afterwards but those you can fix as well.

Most common problems are:

1. No backlight due to shorting out the chips (requires soldering on new chips)

2. Not turning on

3. Not charging (requires soldering on new chips)

4. Screen don't work. (May have to change LCD or LCD connector

5. etc.

Basically if any of these are the problems then you will have to ask your local repair shop to see if they do soldering repairs.

Best of luck