Nokia is cutting another 10,000 jobs globally and has warned that second-quarter losses from its mobile phone business will be larger than expected.
The cuts bring total planned job cuts at the Finnish group since Stephen Elop took over as chief executive in September 2010 to more than 40,000.
Nokia will also book additional restructuring charges of about 1bn euros (£811m; $1.3bn).
Nokia's shares have slumped more than 70% since February 2011.
"These planned reductions are a difficult consequence of the intended actions we believe we must take to ensure Nokia's long-term competitive strength," Mr Elop said in a statement.
Last year, Nokia dropped its own Symbian smartphone operating software and switched to Microsoft's Windows Phone system.