Nokia just announced a trio of "Beautiful to use" Nokia handsets with its Nokia 6600 slide, 6600 fold, and 3600 slide. The €250 6600 fold is said to smoothly arc open with the press of a button to reveal a 2.13-inch OLED display sporting 16 million colors. It also features tap commands. When off, a double-tap of the monolithic cover reveals the time, messages and missed calls. A double-tap also snoozes alerts and silences or rejects incoming phone calls. The €275 6600 slide (pictured left) features the same tap technology but bumps the digital camera up from 2 to 3.2 megapixels with a 2.2-inch QVGA display based on LCD tech, presumably. The 3600 slide offers the same camera with built-in background noise cancellation -- a first for a Nokia handset