The smallest USB 3G modems look like grossly over-sized thumb drives, while the biggest ones sport hinges or fold-out antennas that serve as tripwires for absent-minded businessmen with venti frappuccinos walking by your tiny little coffee shop table. Huawei's E583X detaches all that bother, acquiring a 3G wireless signal and then beaming it out again as WiFi, meaning you can leave it in your pocket and get a double-
