After months of complaining about 3G coverage on their iPhones, AT&T subscribers in San Francisco got some good news on Tuesday: Their mobile operator, along with Sprint Nextel, Verizon Wireless and T-Mobile USA, had extended their networks to the Transbay Tube, the underwater tunnel that Bay Area Rapid Transit (BART) subway trains take across San Francisco Bay.[...]

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SF Bay’s BART Tube Gets Cellular … Almost