Hey guys, having a problem I'm hoping someone can help me with. My roommate called me the other day, I answer and I can't hear him but I can hear myself echoing back through my phones speaker. He could hear me as well. Tried hanging up and calling again (twice) but the same thing each time. Rebooting the phone and battery pull didn't fix the problem. I have recently done a factory reset because of syncing issues with my calendar, so that could be related. I'm guessing it is a software issue since there was sound coming from my phones speaker (my voice) so that's not blown and obviously my microphone is working. Any thoughts on how to troubleshoot this? Tried searching but didn't come up with anything, but not exactly sure what search terms to use for this either. Any help would be greatly appreciated. Edit to add, I'm running stock 2.1 OTA.