Blackberry device in use
Media playback is unsupported on your device
Video

Shares in Blackberry firm Research in Motion down 12%

Shares in Research in Motion (RIM) fell 12% in after-hours trading after the firm said profits this quarter will be much weaker than expected.

It blamed the cost of developing its new tablet-format Blackberry, as well as a migration of consumers towards cheaper handsets in its product range.

The share price fall came despite the Canadian firm reporting $934m (£579m) net profits for the last quarter, in line with expectations.

Profits were up 31% on a year earlier.

Caroline Hepker reports.

Go to next video: What is Blackberry doing next?