AT&T's wireless head Ralph de la Vega in an interview late this week said his company was also joining in Apple's plan to develop an even smaller SIM card. He hesitated to directly make the link with Apple, like France Telecom's CEO did, but confirmed AT&T was "working with the industry" to shrink beyond existing sizes. It would "probably" happen, he explained to AllThingsD, and was something that was a logical conclusion.