iphone speaker volume problem

iphone speaker problem??!!?!? !?!? really annoyed by it!?
ok so i got an iphone a couple about months ago and i noticed sounds wasn’t coming out of one of the speakers. so i posted a question about it and they said that’s the same with all iphones. so i found that pretty stupid. and now my sound isn’t going as loud as it use to when i first got it. and i mean there’s a significant difference. i use to be able to hear when i was riding my bike and the wind blowing in my ears. and now i have to put the phone right up to my ear to hear it well.the sounds is all the way up. it’s fully charged, there’s no volume limit on it, what could be the problem!!!!! if i plugged in the headphones and play it full it would be louder than the speaker, so yeah, its pretty quiet. please someone help!!!
take it back to the store may need to be fixed or replaced.
iPhone 3Gs Volume Issues

