Revenues in Q4 fell to $4.2 billion, a 24% decrease from the year-ago quarter and down 19% from the third quarter. Blackberry shipments also fell to about 11.1 million, a drop of about 21% from the previous quarter. The BB7 smartphones that were launched late last year, haven’t done well in many developing countries. And the emerging markets where the entry-level smartphones have sold relatively well are subject to pricing pressures from competitors. RIM even recorded a writedown on its BB7 products, which shows that the pain is sure to last for a few more quarters at least.