yes, it was the plethora of models even within the same OS - the build-test cycle was abominably slow because you were building 20 phone models at a time - 85GB of output.

The number of bugs greatly multiplied by the variety of configurations - dfifferent hardware and just different amounts of RAM forcing dodgy software workarounds to deal with insufficient hardware.

It was a matrix organisation that was optimised on the theory of making many models to fit different price points and that made it extremely difficult to react to the iPhone - of which beat Nokia with 1 model that poor people got into debt to buy.