A California man suffered severe burns over half his body after his cell phone caught fire in his pocket Saturday, officials said. Luis Picaso, 59, sustained second- and third-degree burns after his cell phone apparently burst into flames, quickly igniting his polyester blend pants, nylon shirt and windbreaker, said William Tweedy, lead investigator and spokesman for the fire department in the Northern California town of Vallejo. Picaso was transferred to U.C. Davis Medical Center and is reported to be in stable condition.