My Pre 3 is a 4g ATT one so didn't come with a headset (why...?). I went to a local store and tried a 4 pin version with mic, music came out OK but voice from the Mic didn't come through. When I unplugged it the built in Mic didn't come back and nothing came out of speakers. I had to restart the device to get audio back. A normal headset-only (no Mic) with a 3 pin plug worked fine.
so my questions...
1) does the Pre 3 use a non-standard pinout / what config headset do I need?
2) has anyone else had this and how did they fix?