Not long after Samsung's SGH-i667 "Mandel" looked like it would never see the light of day, the Windows Phone 7.5 device made its official debut at CTIA, dubbed as the Focus 2. As expected, the phone is officially on sale today at AT&T retailers across the US, giving folks another option aside from the flagship Lumia 900 for a fix of LTE and Mango on the network. To refresh your memory, you'll find a 4-inch
