Roger Entner, Nielsen Telecom
Nokia: the name is synonymous with mobile phone innovation and leadership everywhere in the world but in the US.  Its handsets comprise about 40 percent of the worldwide marketplace. It has not always been this way.  Once the leading brand of phone in the US, Nokia’s share of the market has dropped to about 10 percent.  Brands such as LG, Samsung, Blackberry, Motorola and Apple’s iPhone tend to lead in market share and mindshare respectively.
But cell phones have evolved a great deal since Nokia was a major …