Almost a year after launching what he thinks is the phone to change all phones, Steve Jobs, the boss of Apple, took to the stage again this week to introduce its second version, the iPhone 3G In the past year Mr Jobs, who had surgery for pancreatic cancer in 2004, has visibly aged. Looking emaciated, he farmed out large parts of his speech, which is usually a big marketing and media event, to other presenters. But he still held the crowd in thrall as ever. The new iPhone mostly addresses the shortcomings of the old one. It has gps satellite-positioning technology that will allow a new and exciting category of services, such as location tracking, that depend upon the phone knowing where it is. It works with fast third-generation (3G) mobile networks, not just slower 2G ones. And it panders to corporate customers with features such as better integration with their systems and "remote wiping" of data if a handset goes missing.
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