They're no F1, but Acer's rolling out a whole slew of Windows Mobile- and Android-powered smartphones this year -- and another gruesome twosome of the bunch is now hitting store shelves around the world. First up we've got the WinMo 6.1-based DX900, which really isn't much of a looker but packs the powerful punch of twin SIMs underneath its homely shell. Most dual-SIM devices top out at EDGE, but the DX900 takes it to the next level with triband HSDPA on top of quadband EDGE; you've also got a 2.8-inch VGA
