The sales of iPhone is gradually hurting the revenue of handheld computer maker Palm. Palm has reported a three-month loss after Apple launched its own smart phone. The loss for Q3 2007 is US$840,000 compared to a profit of US$16.5m for the same period last year.

Palm handheld devices have been loosing out to its competitors like Apple and Blackberry. Palm has recently withdrawn its Foleo keyboard and monitor for its Treo smartphones.

But, it launched its Centro devices, which is lightweight and cheaper, to compete with Samsung’s devices.

iPhone was launched in US on 29 June 2007. Blackberry devices are made by Research in Motion.