CNN Mobile has expanded its WAP service to incorporate more detailed categories including:  An expanded business section with up to nine full stories from CNNfn.com in four categories -- top stories, Europe, Asia-Pacific and emerging markets.  A new features category covering entertainment, travel, books, food and arts & style with as many as nine stories in each section.  An expanded weather section with 309 cities from around the world, with current conditions and four-day forecasts. Each city is on a separate page, allowing users to bookmark selected cities.  Sci-Tech -- be kept fully up to date on the ever-changing world of technology along with the latest news on health and environment issues.