Hi, In this page at the wiki  describes the pinout of the headset connector. It also says that the four-ring 2.5mm stereo jack is used by motorola smartphones and the v-360. Both motorola smartphones and v-360 are very difficult to get in stores because v-360 is more than three years old. I've spend today three hours in a dozen stores in my city and i only found one, new but in very bad state, and very expensive (~25 eur).
 http://wiki.openmoko.org/wiki/Headset Some new nokia mobiles have the same kind of connector. This wiki page  says that the nokia 3.5-2.5 adapters doesn't work, but says nothing about nokia headsets. Some nokia headset model numbers with the same plug are: HS-45/AD-54, WH-700, HS-44/AD-44, HS-47, HS-40. Have you tried any of these on the Neo?  http://wiki.openmoko.org/wiki/Getting_Started_with_your_Neo_FreeRunner#Buttons_and_connectors Thanks _______________________________________________ Openmoko community mailing list firstname.lastname@example.org http://lists.openmoko.org/mailman/listinfo/community