Technology
Phone companies like Verizon Wireless -- co-owned by Verizon (VZ) and Vodafone (VOD) -- and Cingular -- a venture of AT&T (T) and BellSouth (BLS) -- have been busy upgrading networks to third-generation technologies like UMTS and evolution-data only, or EV-DO. But returns on those billion-dollar investments have been slow in coming.
Despite the lack of blockbuster sales, gearmakers have touted the advantages of even faster wireless access tech like WiMax, a catchall name synonymous with 4G. "I have a hard time getting excited about 4G when we haven't seen the 3G take off yet," says Greenholtz.TheStreet Premium Services
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| Dow Jones | S&P 500 | NASDAQ | 10-Year Note |
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| 12,435.57 | 1,318.31 | 2,830.09 | 15.81 |
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