The rumors of the basic cellphone's death have been greatly exaggerated -- it's just finding niches to hide in while smartphones take over the mainstream. Witness today's launch of the Kyocera DuraPro on US Cellular. Although it's just a flip phone, it meets the US military's 810G specs for dust, shock, temperature and water resistance, all of which help it survive a rough workplace or an accidental splash at the beach. That and a loud s