Hewlett-Packard (HP) unveiled two smartphones Tuesday, marking its entry into the consumer cellular market as the computer giant takes on the BlackBerry and the iPhone in the increasingly crowded sector.

The technology group has signed a deal with top British cellular service provider Vodafone to sell the e-mail-enabled phones across Europe.

The move follows the trend set by computer and Internet groups, such as Apple and Google, who have shaken up traditional competition by entering the mobile-phone scene.

Dell and Acer are also rumored to be working on smartphones, hoping to tap the growing consumer sphere as more people demand to be connected to their e-mail when out of the office.

HP's iPaq Voice Messenger, aimed squarely at the BlackBerry's slimline Pearl device, and the iPaq Data Messenger will be available in the U.K. on Vodafone next month.

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