Research in Motion's BlackBerry outpaced the Apple iPhone in US first quarter sales, according to research by IDC.
And the gap between the two grew against the last quarter of 2007.
The first quarter report shows that BlackBerry took 44.5 percent of the US market, up from 35.1 percent in the fourth quarter of last year, said Ramon Llamas, analyst at IDC.
At the same time, the iPhone's US market share dropped to 19.2 percent for first quarter, down from 26.7 percent in the market in the fourth quarter of 2007, Llamas said. A drop in the first quarter could be expected, he said, since the fourth quarter includes the holiday shopping season.
But RIM has undertaken a strong consumer marketing campaign, including slick TV ads, to move well beyond its typical business customer base toward more mainstream buyers, Llamas and other analysts have noted.
Llamas said that Palm also gained market share from the fourth quarter of 2007 to the first quarter of this year, increasing to 13.4 percent. But its share is still less than the 23 percent it held in the first quarter of 2007. Similarly, RIM's market share for the first quarter is down from 48.7 percent in the first quarter of 2007.
Samsung Electronics had an 8.6% market share in first quarter, ranking it fourth, while Motorola dropped to 2.6% of the market.