Headset mic not working

I see your point and agree.
But this list is rather issue tracker to narrow down the problem and merely a buying suggestion. As far as I understood this.

Since this knowing the model could help to find and solve the problem, at least you could write to the support team and tell what works and what not.

What do you mean with this?

Hi @therob

Its an issue with different standards, and it seems like FP2 opted for changing its position compared to the FP1. In most cases it seems like a converter cable would work, and this would be a better advice then to look on the list to buy a new headphone I think.

To make a list with random headphone and which standard they use doesn’t make sense. Also In my post to you I have given you the type of headphones I had available to me already. It really just seems to be that FairPhone chose to use a different standard to comply with.

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Yeah you are right @dull!

But did I missed this information? Because this was definitively not clear to my until now, but for you it seems very obvious…?!

So I guess we really have now the REASON of the problem, but NO real SOLUTION and NO OFFICIAL statement on this.
@Douwe, @borjan, @Esmee what do you think?

(Again the link to the semi-official list.)

The headset jack is following the CTIA standard. This information is available on the website (both on the product page and on the webshop).
It has been there since at least the 16th of July (date of the first available capture). (The product page referred to the webshop page for the full list of specifications.)

If a device follows the Android wired audio specifications - especially about the remote control, it should work seamlessly with the Fairphone 2.

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As @borjan stated above: he confirmed that FP2 (only?) supports the CTIA standard.

Still open is, if the FP1 really only support the OMTP, what our experience would suggest? The FP1-specs don’t have any clue about this.

All headsets which do not work properly obviously implement the OMTP standard, where the pin for mic and ground are reversed
(I do not debate, why the world need 2 standards with that minor changes!
And I do not guess, why this was introduced!
But I do ask about, why FP1 and FP2 have different standards?)

So the last missing information is:
Is here any chance that a software-change can do the trick?
Or if CTIA standard is hardcoded in the hardware of the FP2 and cannot be changed (which I fear)?

Can anybody tell my, where at this linked page stands, that OMTP-headset do not work with android, or are even not allowed?
I can only read “OMTP … optional” and “CTIA … required”, but don’t know what this means.

Any help with this?
Is there any argument, why the FP2 should not support the OMTP?
Is it possible to mechanically support CTIA and OMTP at the same jack? (I guess no)

Two topics got a bit tangled, the above 15 posts were moved here. My apologies for not noticing the derailment of the original topic sooner.

Original post:

There’s discussion about this over here, though I see you’ve previously replied there as well. In short:[quote=“therob, post:26, topic:12166”]
Is it possible to mechanically support CTIA and OMTP at the same jack? (I guess no)
No, but an adaptor should work (see the linked thread).
However, if, as the title of the topic suggests, you have both no sound and no mic, then my understanding is that this isn’t necessarily due to incompatible jack wiring. Hence this topic on zero functionality (not related to jack standards), and the other topic on non-working mics (which seems related to the jack standards).

Still I find the non interchangeability between FP1 and FP2 not satisfying.

Summary of my problem: I have bad sound which becomes normal if the one call button is pressed.

IF only ground and mic pins are inersed between OMTP and CTIA and IF the call button connects these two pins it makes all sense to hear perfect sound during button is pressed.

And this supports my claim, that FP1 uses different standard as FP2, which is my main point of disappointment in terms of sustainability…

Hey Rob,

Yup, I agree completely, very disappointed in this decision to back Apple’s dominating standard, over the previously used Android standard. Anybody with an android headset needs to buy a new cable, converter or headset.
I feel that they should upload an instruction manual to change the headphone’s jack wring in the phone, or should at least link to a tested an approved converter in the store.
Its really sad you have to spend more money to use a headset that worked with the FP1.

If it worked on your FP1 perfectly you should be fine with the converter. Probably you can test it in a shop first before buying?

Reading a little bit about that as far as I understood the tendency of all manufacturers has been to change to CTIA for a while now. Originally it was apple but now it’s more or less the standard of up to date phones. About the reasons of course I have no clue.
Meaning that FP in this case was not following apple or something but it was the decission in favor of the more common, hopefully longer supported standard.

I bought the perfectly working “Sennheiser MOMENTUM In-Ear G” at a store today.
There I was told that nowadays basically all headset manufacturers try to comply with Samsung’s (Galaxy) standard when it comes to Android support…
So… it sucks that Apple swapped to pin connections, but I guess at this point it makes sense to have a new unified hardware standard, so that the difference between Apple and Android is only on the software side.
I think Fairphone made the right decision to use the Galaxy standard, even though I can understand the frustration of FP1 owners :frowning:

I added my new Sennheiser to the list:

The mic of the sennheiser mm30i doesn’t work, button + and - same

Not functional mic: Röde Smartlav+

I am still angry about the problems with headsets@FP2…

Currently I am puzzled very much, which in-ear-headset (with mic and 1 button) is working with the FP2 and which not.

The information about CTIA/OMTP and which smartphone model uses which standard, which headset have which standard…is confusing like hell! Only I know: FP2 needs CTIA and this, only partly useful list.

My problem:

  • Now I ordered a headset, which should work with HTC models (ONE M9 M8 Desire Eye A9)…and it do not work with the FP2 (same problems like here)
  • A friends Apple-headset does work with the FP2
  • Similar to the one I bought and which do not work with FP2 there exists several entries at ebay (germany) with the same, each stating different supporting smartphone brands…like here, here, here, here, here…but I don’t know:
    • if they are all the same and just claiming to support different smartphone brands
    • or if they really support different standards (–> so which is the correct one?),

I just want a very basic headset like this:

<img src=‘http://ecx.images-amazon.com/images/I/314ouSeE8iL.jpg’, width=“100”>

Wired in-ear stereo headset, with one button which work for calls, a mic, and from shop located in germany (not amazon).

  • ANY HINTS? Can anybody help my out with this?
  • Should ALL iPhone-Headset work with the FP2?


I have bought 2 handsfree kits now and they don’t work. No one can hear me!

I have a set of headphones that do seem to work, but I cycle and need earphones for under my helmet.

These are the kits I have:

Please help! It’s a real problem for me. I miss my family and friends!!

Funny headsets :slightly_smiling:
Would you please add these to the (in-) compatibility list?

But what a pitty, that they also don’t work.
What I do not understand: the first (midnight raver) should work with iPod etc. and they do NOT work with FP2? As I stated above I already tested a Apple-suited-headset succesfull with the FP2…so why not this?

Same for your second pair, the funny Bamboo things…should work with “Apple, Android, Blackberry,…” But not FP2?

Is your experience same than for me?
→ Only by pressing the call button (if available?) the sound is good. Otherwise the mic is working but you have a very ugly sound?

I don’t understand why the producer/web shops don’t tell, which standard the headsets support like “CTIA” or “OMTP” not not "work for all smarphones, which is obviously not the case.

Or do we still miss anything what is really wrong with FP2s audio jack?
Headphone-technic is not that technically advanced that we cannot expact that it simply works without testint all available sets…
I am very angry about this, also not hearing anything form FP itself about this… @borjan, @MaartenD ??

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My Sony MH 1C Smart Headset works fine. Volume and microphone buttons work with FP2.
It is an older In-ear headset.

But it works with the FP1 as well, only the buttons did not. The microphone itself sounds good.
As far as I understand it this should not be possible?
What is going on?

This is totally confusing and seems like contradictory info going around

Accrrding to the wiki list of headsets that work, https://forum.feairphone.com/t/pencil2-list-of-compatible-headphones-and-headsets-for-fp2/12268, the House of Marley Smile Jamaica should work but I just bought and the microphone does not work. The mic on my old iPhone headphones also does not work.

How do you know what Standard the headset has? this is not found on the packaging or website for the ones I just bought.

How can I find something simple with a functioning mic??

I added the following entry a while ago. As mentioned there, look for Samsung Galaxy certified headsets, they seen to work fine.

Polk Audio Ultrafit 3000
Mic: not working
Sound: Perfect
Play/pause: Working
Next song: Working
Volume: Not working


I confirm that with the classical Apple headset, the microphone doesn’t work with FP2…(pretty frustrating as i need this function for my work!)

I would like to add this information in the wiki created but can’t figure out how to do it…someone can help me ?