Yesterday I just got my brand new FP3. After installing /e/, I begin to try it but, it seems I have a problem with the ear speaker. It doesn’t work. Instead, sound is coming from the rear speaker. Even if I use the checkup tools
I can’t tell if it’s a hardware problem or a software problem.
If it works, you could install /e/ again.
If it doesn’t work with Fairphone OS either, you could disassemble the top module, clean the contacts with cleaning alcohol and reassemble the module … please see section “Replace the Top Module” here …
It’s hard to say with certainty, but this might also be related to an ongoing audio issue with the FP3 that Fairphone has been working on to fix for quite a while. You might want to test if a reboot of your FP3 makes a difference (unfortunately, if it does, it will probably not last as a fix forever, so we still need the fix from Fairphone).