I never used a wired headset on my Droid but I wanted to try them out on the Nexus (mainly due to Google Music and a 4G connection), but when I make phone calls with them the person on the other end says that their voice echos back at them. Everything sounds okay on my end it's just them that echos back to themselves. As soon as I unplug and use the phone normally the problem is fixed. I've tried this with two different headsets now with the same results. Is there something special I have to do to use these properly? A setting I'm missing perhaps?