> And since then, AT&T bought Cingular, now T-Mobile
AT&T didn't buy Cingular per se. In late 2006 AT&T and Bellsouth each owned 50% of Cingular. AT&T got their 50% ownership via SBC. AT&T became sole owner of Cingular by acquiring Bellsouth. That deal closed about Dec 30, 2006 (after many delays getting approval from the FCC). The original iPhone was announced by Apple on January 9, 2007.
AT&T didn't buy Cingular per se. In late 2006 AT&T and Bellsouth each owned 50% of Cingular. AT&T got their 50% ownership via SBC. AT&T became sole owner of Cingular by acquiring Bellsouth. That deal closed about Dec 30, 2006 (after many delays getting approval from the FCC). The original iPhone was announced by Apple on January 9, 2007.