Finnish mobile phone maker Nokia on Friday cut its 2009 handset market share estimate by four points to 34 per cent.

"Beginning in 2010, Nokia is revising its definition of the industry mobile device market that it uses to estimate industry volumes," Nokia said in a statement.

"This is due to improved measurement processes and tools that enable Nokia to have better visibility to estimate the number of mobile devices sold by certain new entrants in the global mobile device market."

"These include vendors of legitimate, as well as unlicensed and counterfeit, products with manufacturing facilities primarily centred around certain locations in Asia and other emerging markets."

STT