TORONTO—Research In Motion Ltd. BBRY +2.01% reported a surprise profit Thursday and a comfortable cash pile for its fiscal fourth quarter, bolstered by the first sales of its new BlackBerry Z10 device.
Underscoring still-formidable challenges, RIM also said it lost about three million subscribers in the period. And Chief Executive Thorsten Heins said he expected to see service fees decline as RIM works through a transition with carriers over those payments.
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