Hi, Recently, for no reason apparent to me, my HTC Desire is making no sound whatsoever when I receive or make a call. I can hear calls if I have the speaker on or if I have a headset plugged in. I also have no problem listening to music through the speaker or headphones. My phone is a black orange branded HTC Desire running the 2.1 software. I am using the 3 network. Thanks in advance for any help. P.S. I have the call volume turned up to maximum before anyone suggests and I have done two factory resets yet the problem still persists.