Microphone works with VOIP or whatsapp but not with regular phone calls

Hello everyone,
I got my new fairphone this weekend and while the microphone works when making or receiving calls through whatsapp or MobileVoip, it doesn’t with regular (incoming or outgoing) phone calls. Restarting the device doesn’t help. Anyone having similar issues or ideas how to fix it?
Thanks :_)

I noticed that only once, when calling a regualar phone number, the person obviously couldn’t hear me. There was also no sound when moving the “Call volume” (?) slider. But that worked again after a reboot.

A post was merged into an existing topic: No sound 50+% of the time in calls, until reboot

Continue the discussion here: