Sony Xperia User Manual page 526

Do not connect earphones, etc. to handset that is wet with water. May cause malfunction.
Do not use handset when Headphone Port or External Device Port is wet or dusty. May lose
waterproof performance, cause electric shock, short circuit, fire, burns or malfunction.
Do not leave handset in a humid place for a long time. Take handset out from bathroom after
using.
Avoid moving handset from cold place to warm place suddenly. Wait until handset temperature
gets warm and before bringing it to bathroom etc.
Complete protection is not guaranteed under all conditions. Malfunctions due to improper handling
by the user are not covered by Warranty.
Draining
When handset gets wet, remaining water may flow out after wiping it off. Drain as shown.
Wipe off moisture on handset surface and back side with dry, clean cloth etc.
Shake handset approximately 20 times until there is no more water splattering (1), then
turn upside down and shake it approximately 20 times again (2)
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