I often bring my E398 to the bathroom when i'm in hostel (afraid of being stealed and to listen to music when i'm bathing in the night. My hostel is so sunyi one) and several times water got inside it.

When it happened, my keypad cannot be used. only the on/off button works.I remove the battery for 24 hours, and it's back to normal,hehe..now my phone is immune to the water