Liquid can get in a cellphone display screen if the phone is dropped into water, such as a swimming pool, toilet or puddle. Moisture can also condense in the display screen if the cell phone is exposed to high humidity, such as in a sauna or a greenhouse. There is less chance of irreparable damage to the phone if you remove the water from the display screen as soon as possible.
Fill half a bowl with uncooked rice.
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Place the cellphone in the bowl with the display screen facing down.
Place enough uncooked rice in the bowl to cover the phone.
Leave the phone in the rice overnight. The rice will draw the moisture out of the display screen.