I've been working for a carrier in Italy in the first half of 2000s. We designed some phones with manufacturers but any phone could work on our network AFAIK. T

I've been working for a carrier in Italy in the first half of 2000s. We designed some phones with manufacturers but any phone could work on our network AFAIK. There was not much choice at the beginning because we only had a 3G network and there were very few 3G phones (only one at launch.)