Speedy action is critical when your iPhone gets wet. The faster you can dry it, the more likely you'll be able to restore power. Don't attempt to launch any programs to see if the phone works. Immediately power down the phone and leave it turned off, ideally for a couple of days. Remove any cables, covers or accessories to dry the iPhone before the internal components are damaged. Turn the phone so that the headphone jack is pointing down and gently shake out any drops of water.
The most popular method of drying an iPhone is to put it in uncooked rice. Put your iPhone in a zippered plastic bag or sealed plastic container of rice for at least two days or up to a week. The rice absorbs moisture from the phone. If you have silica packets like the ones packaged in leather goods or vitamins, put those in a sealed bag with your iPhone for the same drying effect.
If you can't wait a couple of days, you might try using compressed air or a blow drier on the cool setting cautiously to dry out the headphone jack and dock adapter. Apple warns that applying any heat can damage the adhesives in the phone. These methods dry the iPhone quickly but could push water further into the unit. Allow the iPhone to air dry for at least a few hours before you try to turn it on again.
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