This is so far worst thing that Tomi Ahonen has produced. I mean, this time he gives us both lie and all the tools to check it. This long quotation is from very recent blog of Tomi Ahonen:
“I have been screaming about this, the ultimate proof of ineptitude by Elop. Nokia is not a newcomer to smartphones. Nokia is not the ‘challenger’. Nokia is the incumbent. Nokia literally invented the smartphone. And Nokia was a dumbphone maker before that. So Nokia will not be measured by history, on how big profits it made or how big was its empire at its peak. The one measure that history will judge Nokia with, is when Nokia faced its paradigm shift, the shift from dumbphones to smartphones, did Nokia capitalize on that change or fall in the pursuit.” 
“And how was Nokia doing? It was executing this, the most strategic transition, most successfully of any legacy handset maker (ie far better than Samsung or Motorola or LG or SonyEricsson etc). Every single quarter of all time, in the history of smartphones, Nokia’s migration rate from dumbphones to smartphones, had been ahead of the industry level. Nokia was literally ahead of the curve, and Nokia’s handset unit accomplished this without one blemish, not once was Nokia’s handset unit reporting a loss in this time while every other one of its rivals stumbled and reported losses attempting this transition. Nokia had victory in its sights.” 
“That transition rate is what all legacy handset makers will be judged on, nothing else. We’ve already seen Motorola (and Siemens) die in that process, and Ericsson pull out of the Sony partnership too as the third former giant handset maker giant death.” 
“From Q2 of last year, immediately after the Elop Effect, Nokia’s migration rate from dumbphones to smartphones reversed, to falling behind the industry average. Now as we hear Sony saying they will shortly complete their transition to a pure smartphone maker, how is Nokia’s transition? The industry average is about 34% in Q2. And Nokia’s migration level fell from the 14% it had become, to 12% now !!! Yes, adding all Lumia and Symbian and MeeGo smartphones together, Nokia’s proportion of total smartphones out of total handset sales fell even more, to 12%.” 
Wow. Long rant. Sorry that I could not make it shorter.
Now two things are ringing a FUD alarm bell here:
- Graph uses half-year intervals, but Nokia gives quarterly results. What is the need to choose different scale?
- Graph is completely linear. Real-life values are rarely (if ever) linear.
So I checked. And it was not a fun task to dig through old quarterly reports but I’d say it was worth it. Here’s the same data using Nokia quarterly results. 
More exact numbers: