San Francisco - Apple (NASD: AAPL) CEO Steve Jobs unveiled the much-anticipated second-generation Apple smart phones at the company’s annual Worldwide Developer Conference in San Francisco on Monday. The new iPhone 3G will use third-generation, or 3G, wireless technology to enable users to run wireless Internet applications like streaming video much faster than before. The price is also cut to $199 from $399 for the 8GB version, when it goes on sale in 22 countries on July 11.