Ok I don't really know if this is a problem or not. I have an iPhone 3G, and I've noticed that in the past couple days the speakers were quieter - or it could be my imagination, I'm really not sure. It seemed like my friends 3G was able to play songs lounder than mine was - but that could be just the audio file, not necessarily the phone. I started to investigate, and it looks like only one speaker is actually making sound. If I hold my finger over the left speaker, the sound is clearly muffled - so I assume that speaker is working, but when I hold my finger over the right speaker, nothing happens - there is no difference in audio volume. Is this normal? Should I have it replaced? Thoughts?