An internal AT&T memo published by MacDailyNews claims that the July 19th launch of the iPhone 3GS was record-breaking for the company in a number of ways. The memo states the launch was its “best-ever sales day” and second-largest traffic day in its retail stores, accounted for the most transactions ever processed and most upgrade eligibility checks in a single day, and was the largest order day and feature sales day in att.com history.…
