Well, you know, might want to wait until it stops dropping... Investors are selling it because nokia said 'we will lose max 2% this quarter' and now they say 3%. Not really a big difference.
Nokia has sold at least 2 million lumia phones already, and they're going to lose some money because they are giving them away for almost nothing. It might take another 6 months for them to make any money, but the stocks will go up then.