If it happens to you, here's some basic First Aid for reviving a wet cell phone:
- Don't try to turn it on again until it's completely dried out. First, shake out as much water as you can and dry it off with a paper towel.
- Take out the battery and the SIM card (the portable memory card) and dry them off with a paper towel. Don't try to dry the inside of the phone - you might break it.
- Pour dry rice into a ziplock bag. Place your phone, the SIM card, and battery in the bag of rice and make sure they're covered. Seal the bag and leave everything in there overnight.
- The next day, take everything out and clean with a damp paper towel. Put the battery and SIM card back in the phone. If it still doesn't work when you turn it on, keep it in a warm place for a while and try again.