My bother's brand new xperia J screen stoped responding after he droped it into water.
Actually it died completelly, but after several days in a bag of rice, it was able to suck in the humidity in it, and now everything works except for the touchscreen. Once I saw it booting with clear image on the screen, I thought everything would be fine.
Do you have any other sugestions? Maybe the humidty wasn't completelly sucked and its preventing the touchscreen to work.