Would someone please be able to test something on their iphone for me. On the bottom of the iPhone where the speaker is, if you cover up the left hand side of the speaker do you get any sound out of the right hand side? The reason i ask is if I cover the left side It mutes the sound, when I cover the right side it makes no difference and I can hear it fine still, I hope this makes sense, I'm worried I have a faulty speaker.