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A woman holds the Blackberry Passport smartphone during at a simultaneous launch event in London on September 24, 2014. BlackBerry on Wednesday unveiled its newest smartphone with a full physical keyboard and a large screen, aiming to return to its roots targeting business users. The BlackBerry Passport, named for its approximate size to the travel document, is designed to win back key corporate users after the struggling Canadian company was effectively knocked out of the highly competitive consumer smartphone market dominated by Apple and Samsung. AFP PHOTO / CARL COURT        (Photo credit should read CARL COURT/AFP/Getty Images)
A woman holds the Blackberry Passport smartphone during at a simultaneous launch event in London on September 24, 2014. BlackBerry on Wednesday unveiled its newest smartphone with a full physical keyboard and a large screen, aiming to return to its roots targeting business users. The BlackBerry Passport, named for its approximate size to the travel document, is designed to win back key corporate users after the struggling Canadian company was effectively knocked out of the highly competitive consumer smartphone market dominated by Apple and Samsung. AFP PHOTO / CARL COURT        (Photo credit should read CARL COURT/AFP/Getty Images)

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BlackBerry CEO on turnaround

BlackBerry CEO John Chen speaks to CNN's Kristie Lu Stout about his rescue plan for the struggling handset maker.

BlackBerry CEO on turnaround

BlackBerry CEO John Chen speaks to CNN's Kristie Lu Stout about his rescue plan for the struggling handset maker.