Blackberry expecting $1bn losses in quarterly results
27 September 2013 Last updated at 11:46 BST
Blackberry have warned that their losses could be almost $1bn for the three months to the end of August as they release their results for the last quarter on Friday.
There are now fears that their $4.2bn takeover offer from major shareholder Fairfax could fall through.
Mariko Oi reports.