A woman uses her smartphone between a billboard of Samsung Electronics' Galaxy S III and Galaxy Note 10.1, left, at a subway station in Seoul, South K...
AP
smartphone

Smartphone sales up 36 percent in fourth quarter, led by Samsung

Dell XPS 12 Convertible PC
Dell
sales

Holiday PC sales slide for first time in 5 years

smartphone

Smartphone sales down for the first time

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ipad-2

eBay iPad 2 sales: brisk, especially in U.S.

mobile-apps

Find Black Friday sales on your phone, on the go

idc

iPad as PC would make Apple the largest PC seller in U.S.