Yes I agree, just that my two FP3s work fine and my daughter’s FP4’s fine
https://support.fairphone.com/hc/en-us/articles/360048843571
Safe Mode
Not to be confused with #dic:recoverymode
Safe Mode lets you boot up your phone without any third party apps. Sometimes you might end up in Safe Mode automatically, but you can also do it manually to check whether an issue you are having is software related.
Note: On FP1 the popup doesn’t say you’ll reboot into safe mode, it only says “reboot”.
Another option to get to safe mode is to power off your device and, while powering on again, hold down volume up and volume down until …
I’m thinking more on the lines of seeing if it is an issue with your phone as you may find another phone doesn’t have the problem ~ then you could more confidently contact official support.
AH! yes FP4