The company adds that customers opting for lower-priced handsets in its range will also hit profit in the first three months of its financial year.
Shares in the Canadian company fell by more than 10% in trading following the update yesterday (24 March).
Despite a worse than expected start to its current financial year, net profit for the year to 26 February rose to $3.4bn (£2.1bn). Revenue rose to $19.9bn (£12bn), up 33% from $15 billion (£9bn) last year.
RIM hopes BlackBerry Playbook, which launches next month, will compete with the iPad 2 in the growing tablet market, which offers higher profit margins.
Launch plans suffered a blow last month after it emerged that CMO Keith Pardy is to leave for “personal reasons” after almost two years.