Sound on iPhone 4s isn't working?

The sound on my iPhone 4s isn't working like for when I get texts, also apps and when I wanna play music out loud. But It DOES work if I put head phones on… And my alarm sound does go off AND when someone calls me the sound does work.
What can I do to fix this? When I click the + and - bars on the side of my phone they don't show up. And YES the sounds are All on.
Can somebody please help. Its really annoying me!

Yeah that happened to my old iPod touch 4 before I got my new iPhone 5 ^.^ I dropped it on a bowl of ramen lol. The sound wasn't working period and the volume adjustments wouldn't work or anything! All I had to do was leave the iPod sound alone for like a day and it was all straight up working again. Just let the sound wires or whatever readjust and it should be fine.

I'm having the exact same problem, (except for I didn't drop mine in raman) and have for about 2 weeks - I don't even mess with the volume anymore because it's pointless. Randomly it will work for about 5 seconds when I'm unlocking my phone and then it dies out again.Am I SOL? Or is there a better solution to get mine to work?

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