Hello tech savvy individuals! I call on you for some help. Here's my issue: Iphone can connect to outgoing/incoming phone calls, but neither end of the call can hear the other. It's a complete lack of sound while in a call, no static or distortion. All hardware required for the call seems to be working just fine.. (speaker, microphone etc) but still no luck! Tried restore, different SIM card, using a headset, speaker phone, a quick phone cleaning, trouble shooting at the apple store and still no luck. So here I am! It may be important to note that my mute toggle switch stopped working around the same time, I'm not sure if it's just coincidental, or related somehow. I would really like to hold out on getting a new phone until the iPhone 5 is available, so i'm hoping to either fix this issue or find some work around to get by until then. Thanks for reading and I look forward to hearing any suggestions!