The growing popularity of always-on e-mail is also reflected by the fact that Research In Motion's (RIM's) BlackBerry devices vaulted into the lead as the best-selling PDA worldwide. BlackBerry unit sales increased 75 percent compared to the first quarter of 2004, the study says. It now commands 20.8 percent of the worldwide PDA market compared to 14.8 percent of the market a year ago.

PalmOne, which was the market leader a year ago, is now in second place with an 18 percent market share, according to Gartner. Hewlett-Packard, which was the second-leading vendor a year ago, is in third place. HP's market share shrank to 17.6 percent from 21 percent.

The study does not cover devices, such as smartphones, which have voice capabilities. It does, however, cover so-called wireless PDAs that don't have voice capabilities. Other studies have shown declining sales of PDAs, but those studies did not include devices with wireless, non-voice capabilities

By: DocMemory
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