Dropped phone in water, but it won't stay on off the charger
I unknowingly dropped my iPhone in water a month ago, and now it will turn on, but will not hold a charge. I was originally told that it would never work again, but that does not seem to be the case now. My replacement iPhone's screen has went out and is cracked, but it works otherwise (I can still hear it ring...etc). Would it be safe to switch the battery from the cracked screen to the other phone?