This is a HUGE problem! During a call, when I put the phone by my left ear, my ear and/or my cheek touch the screen, and though one would expect the buttons on the touch screen to be disabled during a call, when held against the ear and the face, I keep accidentally hanging up calls or in some other occasions, muting, having frustrated monologues to myself, thinking that the other person is ignoring me... I mentioned using the left ear, because, it seems to have always happened when I held the phone by my left ear and not when I held it by my right ear. I'm trying to find a more elegant solution, as dropping numerous calls is not an option. (today I dropped more than 15 calls). Any suggestions?