"Quickly following a similar move by Verizon, cellular carrier AT&T today said it would introduce an unlimited plan of its own. The $100 monthly agreement allows subscribers to call anywhere within the US without the long distance or roaming charges that normally come with service, regardless of the length of the call.
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The plan will not be available until Friday February 22nd so DO NOT CALL to change your plan until then. When I called, the AT&T sales line was completely jammed and I had to wait 15 minutes. Usual wait time is less than 3 minutes.