Pinout of Headphone Jack

Hi there.

It’s probably not a Software-Only question, but related atleast to software development (in conjunction with hardware development): what is the Pinout of the Headphone Jack of the Fairphone?

Is there just Righ-, Left- and GND for Audio, or mayby also AUX or Mic (many phones actually have 4 pins in the headphone jack, some even allow playback to be controlled through the connector).

My goal (at first) would be to hook up an external microphone to my FP1.

Thanks in Advance,


For sure it has also the mic pin because I use headphone with mic and I’m able to talk by phone.
Also the headphone has a button to answer/hangup calls and it can pause/play songs on media player.

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Ok, so it’s either CTIA or OMTP, but which one?

I guess I’ll have to go for trial-and-error; as soo as I got the neccessary plugs in my post box I’ll report back with the pinout.

I use a iRig Mic Cast succesfully. It’s no stereo mic.

Maybe this helps:

What kind of microphone would you use? Let it know if it works, I consider buying a RodeLavelier (