AT&T sold its wireless business a few years back to Cingular, which was created in 2001 as a result of a joint venture of SBC and BellSouth. Customers who had the AT&T Wireless name were converted to Cingular customers. And now, they are back with the AT&T name. So there.
Here’s an idea for an advertising slogan: The New AT&T Wireless: Lowering the Bar.