Ars Technica helped clear up some confusion related to the new unlimited voice calling plans offered by the four major cellular carriers in the United States (see "," 2008-02-19, and " ," 2008-02-28). Initially, it seemed as if iPhone purchasers wouldn't be eligible for the $100-per-month rate AT&T was offering (exclusive of data and text messaging).
David Chartier at Ars Technica that there was a delay of more than two weeks between the general AT&T offer and its appearance on the . A new $120 per month plan includes unlimited voice minutes, unlimited EDGE data, and a paltry 200 text messages. Another $20 per month gets you unlimited text messages. Chartier reports that customers with current AT&T plans or those that signed up during that period can call the carrier for a no-charge switch to the unlimited voice plan. Additional lines cost another $120 per month in a family plan. (Alaskans, sadly, can't get unlimited voice service from AT&T.)