My phone got a little wet last night but not like submerged in water. Now none of the keys or the ball work. I removed the battery and put it back in and the phone turned on but that's it. I cannot even make or take calls (the phone rings for incoming calls but I can't take it).

Any ideas if there's a DIY fix for this? I'm actually surprised that a little wetness caused this issue. All my friends' phones were fine (and we were just doing a hike in the rain together). Tnx!