i have a Samsung propel and when the backlight trys to go out a number 6 or 3 pops up?

[sniper23944]

ok so i was taking a shower and the steam must of got in the phone. it was fine till last night when i was on the phone and the number 3 and 6 pop up when the back light trys to go out
whats wrong will you plz help me i love my phone!!