If your daring enough you could try opening the phone and use 99% isopropyl alcohol (technicians alcohol) to clean the parts. Alcohol displaces the water so as you use a small brush (we call thrm acid brushes....not sure what the 'normal' world calls them) use a single ply tissue to absorb the water/alcohol.
AT&T S4 with Wanam lite 1.1
T-mobile Samsung Galaxy Note 2 unlocked via *#197328640# menu (T-mobile service sucked, and customer care could not figure out how to do anything)
Verizon Samsung Galaxy Nexus(hated battery life & verizon's customer service and CDMA)
Verizon Samsung Stratosphere (loved keyboard, hated processor)
Motorola Atrix 4G (AT&T version)
Softbank X06HT (HTC Desire)
Google Nexus One (I broke a few resistors on the Motherboard)