I have a Fairphone 2 running Fairphone OS 18.01.1 (I tried updating to 18.04.1 several time but I never got it to not work).
Up until last Friday I could use the camera and store photos on my phone. I have a Sandisk 64GB SD card installed and configured such, that the memory is “shared”, i. e. together with the built in storage it appears as one big RAM section of which 15.76GB appears as used and 58.48GB are still available. The whole memory section is being marked as “Interner Speicher”. For no apparent reason - I did not change anything “major” on the phone, apart from installing a “DonkeyBike” app and de-installing it again after a while - I can no longer take pictures, view/download images from WhatsApp, store screensnaps from my phone or delete Images from my “internal storage”. I tried “ejecting” the SD card and re-installing it again, I rebooted several times, but nothing helped. HELP - what can I do?!?