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, including BlackBerry devices, are still well within their two-year contract period."
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