Nokia should invest into good UI for smartphone. Only at this condition they will succeed in this market. Today N97 ( even Mini) is not at the level of iphone and other existing smartphone with different OS ( like Android). They do try to do something with N900 but again this is a flop for users point of view.
I nsist that they do not understand the market at all except for Geek ( this is a very low market).
My view of succes today is more oriented on Android phones. Poor market share today but a market with very high potential .