As mentioned Fairphone probably didn’t hear complaints from the Netherlands, which given the following is a bit or a concern.
Even though Vodafone Germany seem to be happy to work with Fairphone there was a 3 month wait for a fix for caller ID in Vodafone Germany ???
The next update is already going through google certification, so it may be worth asking Fairphone if they were aware of the problem with caller ID in the Netherlands and there is fix is in the next update or even further down the line.