PC World - AT&T is gearing up for a fight with the impending end of its iPhone exclusivity, and the launch of the Verizon iPhone. No longer able to rest idly on the fact that it is the only iPhone game in town, AT&T will have to be more aggressive about competing with rival wireless carriers in other ways. With that in mind, AT&T is embracing the Wi-Fi hotspot concept and expanding its data tethering program.
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