I picked up a Plantronics phone headset that’s nominally compatible with Kyocera phones, but of course not with the Virgin Mobile K127 Marbl I have. More on why I have that phone there. There are, as nearly as I can tell, no third-party headsets available for this phone.
The Plantronics headset has the pinout shown to the upper right in the note below. It’s straightforward:
- shell — common
- ring 1 — left audio
- ring 2 — right audio
- tip — mic + button
Plugging the headset in causes the phone to throw a hissy fit.
Jamming an open-circuit plug into the phone’s jack has no effect; the phone thinks there’s nothing going on and still routes the audio to the internal speaker.
Evidently, the phone expects a different combination on the plug.
Some Webbish rummaging produced a list of headset pinouts, which goes to show that there’s nothing like having enough standards that everybody can have one…
More tinkering is in order, but I found this list while I was clearing away the rubble from some completed projects and figured I should put it somewhere obvious.
The Smell of Molten Projects in the Morning 
I’m trying to find out the audio pinouts for most popular phones. Blackberry, iPhone, LG, Motorola, etc.
I have found some at pinouts.ru. Do you have any other suggetions?
thanks,
Robert
Alas, no.
Those scrawls came from random Web wandering over the course of a month or so, but I wasn’t recording where I found each one. Depending on Google (and its ilk) to find the same thing twice is a bad habit, to be sure, even if it’s encouraged by link rot.
If you ever do find the Marbl pinout, let me know!