When the phone starts, it tells me that my SIM card is locked and that I have to call my service provider for the PUK code. I can not skip this screen. The only way to start the phone is to remove the locked SIM card. But then I can not unlock it with the PUK code.
OK first things first, Problem solved.
Now what happend.
I contacted the Network provider. They told me the card were not blockt neither the puk has not to be entered.
I went to a provider store they tested the simcard on an other phone and it works fine.
Next we removed the sim pin withe the shops phone. After this the simcard could be used without entering a pin.
When the simcard was put back in the fairphone the phone loged in the provider network as aspected. Final step was to reenter a simpin and everything went back to normal.