My phone recently took a dip and I have one thing to say from it: cat litter.

By wrapping my phone in a paper towel and submerging it in (clean) cat litter, I have been able to slowly but surely remove all of the water from my phone screen. I have heard similiar stories about water leaving their phone screen with people simply leaving their phones on a towel on top of the cat litter, so I would imagine that submerging it in cat litter would get rid of all of the water.

Two things can hurt a device when it is submerged in water, 1. shorts - if two things connect with water that reaaaally shouldn't with power running (which is why you disconnect the battery ASAP and don't put it back in until all water is gone), you can fry an essential component and 2. mineral damage - anything short of distilled water contains stuff that is bad for electronic components. That said, you can rinse your device out with distilled water or, my recommendation, rubbing alcohol which will flush out anything that shouldnt be there, including some excess water, and then quickly evaporate.

Tuahaa did you manage to revive your 770?