Hi I'm a long time user of Apple but a first time iPhone user. I have a friend who wishes to sell me her December 2008 iPhone 3G. She said when placing calls the phone works alright, you can hear them, and they can hear you, but when you turn it on speakerphone, you can not hear them. The speaker does not work on speaker phone, or when playing music or applications without headphones. My question is, does the non speaker phone (normal phone conversation) and the speakerphone run out of the same speaker? The "earpiece speaker"? If so, to fix this problem do I have to replace the earpiece speaker? Or how should I fix this?