We have older SIM-ST-MFF2 chips ( not the newer GL1 -chips).
We checked for VALID-state with web Luhn-algorythm Calculators.
They are VALID SIM numbers.
We obtained these thru DIGIKEY and MOUSER.
Why does HOLOGRAM fail to accept these SIM numbers.
944477400000219896
8944477400000219821
8944477400000219854
8944477400000219912 Thank you Van