Summary: I recently purchased this phone and send it to my parents in India. One major issue they are encountering is that when a call comes in and they answer the person is on the other end cannot hear anything that they are talking. It seems to be working when used with headphones only...Is that by design? They are having a great deal of difficulty because of it, and the phone is not even being used because of the issue. Any suggestions on how to rectify this issuer?