For iphone LCD screen display, Apple's latest release of iPhone 7 and iPhone 7s has a waterproof function. This means that the phone is not a problem immersion. However, apple officials still do not recommend the use of underwater.
If your iPhone 7 accidentally soaked in water. First, don't try to charge or call. You can wipe the surface with a soft cloth and gently shake the iPhone, and then put the phone in a well ventilated place to dry.
If there are serious problems, should be promptly sent to the after-sale, by the professional maintenance.
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