Chosen Solution
I dropped my iPhone XS in soapy water. Few days later, the phone works except for the screen. It is black and tactile is not responding. It makes sound and vibrates when I plug it, volume up/down and power button does work, I can locate it using ‘Where’s my iPhone’, I can answer phone calls when using earbuds button to answer and FaceID seems to be working (when I film the iphone, i can see the little red dot indicating that FaceID is processing). My question is: Do you think replacing the screen will work?
Liquid damage is like treating a stain on your favorite shirt in that it should be treated immediately. Before ordering a screen I would open it up and inspect it. The main logic board is actually two soldered on top of each other and liquid can find its way in there but you’ll need thousands of dollars worth of special tools to get them apart. Look for any white crusty residue on components and scrub it off with some ISO alcohol and a toothbrush. If you end up buying a new screen, go for OLED because that what the phone was designed for. LCD alternatives are cheaper, but will end up costing more because they have been known to damage display connectors on the board.
