Its been just a month when my dad gifted me all new iphone 3gs, and that was the best gift I had ever got. But from past two days I am having a problem with my iphone. I am not able to hear any voice during calls the opposite person is able to hear my voice but I am not able to hear their voice! I even tried making calls by restarting my iphone but even that didnít make any difference! Is anyone having similar problem? Kindly help me with your suggestions. Thank you.