...i get it? Hi Martha, thks for the answer u r really very helpful, but am in Mauritius and the abbreviation as u put it is a bit is alien to me. In my country the network is not the same as in Paris and europe, here u just buy a phone and then choose ur network (U just buy the Sim of the Service provider), so there isn't need for coded phone. But the problem is that i really don't know how to get this NCK code, i asked the person who gave me the phone but she herself doesn't know about this code, perhaps here and in Paris there is another apellation for it, don't know language differences!!!.