Nokia's first half of 2010 will be an uphill struggle without a viable device to beat its rivals, a research note by MKM Partners analyst Tero Kuittinen warns today. Citing checks, he notes that N97 sales have continued decline since the smartphone's peak of 2 million this summer and that its reworked cousin, the N97 mini, has been "soft" from the outset. Without either acting as a sales leader, the Finnish company is likely to struggle as rivals like Android devices, the BlackBerry line and the iPhone steal share.