FP4 Microphone not working on loud speaker on GSM calls

[fp-user-x]

Thanks for that, I saw the same test issue in the screenshots so replied here to confirm those issues.

I didn’t know it was possible to test the mic in My Fairphone App (forgot that existed actually ). The mics seem to work there.

I won’t reply here anymore as I see some detailed comments that split off like you said. But this gives me some new scenarios to test so thanks!

[Grayscull]

Hey man,

I’m having the same problem and already in contact with the support. They told me to send the smartphone to repair.
I did it with knowing that won’t work.
It came back after a week and the problem is still there.
I’m in conctact with the support again.

Here is my post in the forum.

Call problems while loudspeaker is activated

Hey guys, I’m using my Fairphone 4 for a few months now and after the last update I have problems with my mobile call quality. If I use my smartphone with the loudspeaker activated during the call, my voice isn’t recorderd properly and I always sound like I have connection problems. After I switched back to my regular “private ear loudspeaker” there isn’t that problem anymore. I assume it’s a software problem. I also phoned a test hotline to see if the problem is really on my side and I got…

I will also take your one and send it to the support, to put some “pressure” for a solution.

Greetings

Grayscull

[jakabasej5]

@y_cho

When on “VOLTE” (which is called something like "imporve audio via 4G) It s not usable at all on Free mobile with my phone. I cannot have a regular GSM call 70% of the time. So getting on loud speaker is my last concerne when anyway no one hears you with “VOLTE”

When using “VOLTE” (or something like “improve audio via 4G”), it’s not usable at all on Free Mobile with my phone.

[OldRoutard]

Welcome to the forum.

@jakabasej5

it’s not usable at all on Free Mobile with my phone

I just did a test on FP4 with Free Mobile, 4G Calling, Speaker mode, the caller could hear me perfectly.

But I thought this thread was about Speaker mode in GSM calls (with 2G).

For the record, I also performed a test of Speaker mode with 2G, still using a Free Mobile SIM. No problem encountered.

[Derkalerka]

idk be cool if they had a module for a microphone, at least one down by the charging port to swap or upgrade.

[Patrick_Roelli]

Hello, I’m having the same issue. When I call using the speaker people can’t hear me, it custs all the time. Anybody found a solution?

[raoel]

Having the same issue

The “My Fairphone” app does not have a test for this anymore or is the test working but I cant actually use “hands free” when making a call?

[Norbert_Van_De_Kamp]

Also having the same issue.

And if I read al the messages correct, there is still no solution. And there a people who are changing the subject.

PROBLEM

When on speaker, the microphone isn’t working. I can hear the otherside very well, but the otherside can’t hear me anymore. Before i put it on speaker (normal conversation) the otherside can hear me, but when on speaker it isnt working anymore.

Is there a fix for it? Software-update or anything else?

[OldRoutard]

Just for the record, after updating to FP4.QREL.15.16.1 (30 March 2026), is this problem solved for anyone? The bug isn’t in the fix list, but you never know.