Hi Nico and welcome to the forum. You may have noticed the increasing request for the bottom module.
Please have a look at the option to repair, though this may not be easy or the following link apparently relevant but if you search you may find notes on microphone replacement.
@JohnHughes (thanks again) send me two broken bottom Modules some days ago. This one has a defekt µUSB port.
After disassembling I took a picture with a microscope camera and found some solder cracks. Barely to see without magnification. Two cracks at the shield contacts that I am not too worry about, but also one at contact 5. I am sure that was a slack joint. Some serious force must be acted to the Port.
I will try to resolder the joints and hope the bottom module will be able to do its work…
No, for now I will have to take the speaker and the vib. from a dead module and reuse them. The microphone will be a new one. But I added a filter for the differential pair and I also added a reset fuse. Maybe Fairphone will cooparete this time, if I can show a working prototype. This shouldn’t be too hard, because I can handsolder everything and the PCB is cheap to produce, because it’s only a 2 layer PCB.