It's also delaying the launch of its new phone operating system, BlackBerry 10, on which it's pinning its hope for a comeback.
Research in Motion Ltd. lost $518 million, or 99 cents a share, in the quarter that ended June 2. This compares with a profit of $695 million, or $1.33 per share, a year ago.
Excluding impairment charges, the latest loss was 37 cents per share. Analysts polled by FactSet were expecting a loss of 3 cents.
Revenue fell 43 percent to $2.8 billion, well below analyst expectations at $3.1 billion.
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