Believe in Nokia as a company?
They have smart people, enough cash to do the transformation, profitable businesses (basic phones and Nokia Siemens Networking) and a well-known and trusted brand. It is possible that some day in the future they will succeed.

Believe in Nokia as an investment?
I'd like to refer to my previous analysis of the valuation: http://boards.fool.com/quick-valuation-analysis-30158790.asp...
Market valuation has since risen to about 7,9B EUR. At the current price you don't have to pay much or at all for the main business of making handsets, networking equipment and mapping services.

Dividend in 2013?
My guess is that they will pay an annual dividend of 0,1 EUR in 2013 compared to 0,2 EUR per share this year. That would cost them less than 0,4B EUR. Yield for today's price would be 4,75%.

Conclusion?
As an investment I believe in Nokia as the current valuation doesn't expect anything from the business.