Hewlett-Packard unveiled two new cell phones Wednesday, pushing deeper into the lucrative mobile phone market and broadening the array of equipment it can sell to large companies.

The phones were launched during a celebrity-studded gala in New York highlighted by one of the Palo Alto company’s most ambitious product rollouts, for the iPAQ brand of handheld devices.

Besides introducing several new HP laptop and desktop computers and a high-performance gaming PC, the launch included more than 55 products, including services, the two new phones and new personal digital assistants, or handheld computers.