The company, which last month scrapped a plan to sell itself, had posted a profit in the same period a year ago.
"GAAP loss from continuing operations for the quarter was USD 4.4 billion...This compares with a GAAP loss from continuing operations of USD 965 million in the prior quarter, and GAAP income from continuing operations of USD 14 million in the same quarter last year," BlackBerry said in a statement.
The revenue of the company for the third quarter of fiscal 2014 was approximately USD 1.2 billion, down by 56 per cent, from USD 2.7 billion in the same quarter of fiscal 2013.
During the third quarter, the company recognised hardware revenue on approximately 1.9 million BlackBerry smartphones compared to approximately 3.7 million BlackBerry smartphones in the previous quarter.
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The company was recently acquired by Prem Watsa led Fairfax Financial Holdings for USD 4.7 billion and has undergone massive restructuring during the reported quarter.
The new Executive Chairman and Chief Executive Officer of BlackBerry John Chen said: "With the operational and organisational changes we have announced, BlackBerry has established a clear roadmap that will allow it to target a return to improved financial performance in the coming year."
However, shares of the company were trading 16 per cent higher on NASDAQ in early trade.
"Handset shipments were much worse than expected and most were BB7 devices, but cash flow from operations was much better," brokerage Jefferies said in a note to clients.