From what I've read most Finns (and possibly Europeans, but certainly Brits and Aussies/Kiwis) would go with the pronunciation where "No" is pronounced as in the first three letters of "knock" so you have kno-key-ah while Americans say know-key-ah. All advertising I've seen, both local and internet (thus global?) based conforms with the Finnish/European/Aussie pronunciation. Hell, some Americans think Nokia is a Japanese company so perhaps no great surprise they have their own unique pronunciation!