This statement doesn't seem correct to me. Nokia has a vast amount of research on mobile UX, even from before Apple joined the play, probably as no one other company. As a (stellar) example, check out Jan Chipchase's work (http://janchipchase.com/) with a ton of in-loco research on mobile phone usage, and many research papers presented - with a particular focus on the non-developed world.
In my opinion Nokia suffered from big-company chronic slowness: the current cash-cow was still providing the income, hence all future investment was unfocused, under-funded.
PS: A nice question is still how much/if any of the investment of Nokia in the undeveloped world will still be able to bring some returns. Windows Phone completely eschews that...