This article shares tips for Mobile phone users in case as accident with water might happen. The key take away is that users should allow the phone to dry out for a few days before even attempting to power on. 

http://www.cnet.com/news/splish-splash-what-if-your-phone-takes-a-bath/

It’s that time of year again. The sun is shining. You’re barbecuing by the pool or at the beach.¬† Everyone jumps in the water to cool off. You do too. But wait! Your brand-new iPhone is still in your pocket. And now that the days of a new-subsidized-phone-every-two-years are over, making silly mistakes like soaking your phone in the pool is a lot more costly. You are in luck. The gadget trade-in site Gazelle has put together a handy-dandy list of tips for what to do when your iPhone or Android device goes for a swim. If you follow these tips, maybe, just maybe, your phone will survive.

1. Remove it from water as soon as you can — The longer your phone stays underwater, the less likely it is to come back to life.

2. Power down immediately¬†— Turning the device off may prevent it from short-circuiting. This is a really important step, so make sure you do this as soon as you can.

3. Drain it — Remove the battery (if possible), headphones, SIM card and memory card and let the water come out. You could also try dabbing with a dry cloth or paper towel to remove excess water.

4. Open it up — The best way to dry out your phone is to open it up.

5. Dry it — Now that your phone is open, you’ll need to dry it to reduce the damage done to the components.

Make sure you give your phone a few days to dry out. Then you can turn it back on and see what happens. It may boot up right away. If it doesn’t, you could try charging it and swapping the battery. If that doesn’t work, try syncing it. Gazelle said that in its tests, iPhones that appeared dead could still be synced and that data could still be retrieved. Also, keep your SIM and SD cards. These contain contact lists and other personal data that can be uploaded to a new device. If all else fails, you can always trade it in, even if it’s water damaged and not working.