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I got salt water in my iPhone 7 while on vacation, now the screen is black. I toke it to Apple and they won’t fix because of water. Is it still repairable?

the faster you get it to a repair shop - the better. salt water is very very (edit: bad) for smart devices (electronics). the motherboard need to be cleaned and tested with new parts.. your chances are 60%. the salt water causes terrible corrosion. hurry to the local repair shop. good luck