Timothy R. Butler writes: "Much to the chagrin of owners of various 2G cell phones on AT&T Mobility's network, including the highly visible, and originally highly expensive first generation iPhone, we have discovered that AT&T has been quietly adjusting its network in ways that degrade 2G network performance as it has sought to build out its next generation 3G network. Many of the phones affected are still well within their two year contract period."
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