hi I have a problem with calling. yesterday i spent all the power of my battery and i connected to USB to charge the battery. Then I got call from my friend and i disconnected the phone from USB connector and put the phone to electric charger.After that when I call anybody, I can hear their voice but they say they can't hear my voice clearly. Too much noise with my voice and they feel my voice comes so far away from the phone. Does anybody have/hear this problem? Please help me.