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Blackberry quarterly results expected

John Chen took over as interim boss at the smartphone maker last month, and today he presents the first set of quarterly earnings under his watch.

Blackberry is presenting its first quarterly earnings under new boss John Chen, after a difficult year for the smartphone firm.

Analysts are expecting sales to be down by around 40% on last year, with mounting losses after Blackberry's new range of phones failed to catch on.

Samira Hussain reports.