Can something called WiMAX succeed where other technologies have failed and bring us ultrafast anytime-anywhere wireless data? A couple of years ago promoters said municipal Wi-Fi would do the job, but projects from San Francisco to Philadelphia have been abandoned or scaled back after smashing into economic and technical realities.rnThe fast 3G networks currently offered by the likes of Verizon Wireless and AT&T are a step up from EDGE and other second-generation networks. But they still offer only limited coverage. And while 3G is fast enough to pump Web pages to iPhones and other smartphones, it can be painfully slow feeding the bigger data appetites of laptops, whose users expect to stream music and watch video.
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