AT&T plans to spend $18 billion in 2010 upgrading its wireless networks to handle the increasing amount of new traffic.
AT&T 计划在2010年花费180亿美元升级其无线网络,以应对不断增长的新通信量。
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On the wireless Internet controlled by cellular carriers like AT&T, we can only use the phones they allow on their networks and can only use the applications they approve.