Preorders for Apple Inc.’s iPhone 4S topped one million in a single day, surpassing the previous single-day preorder record of 600,000 set by the iPhone 4.

“The first day preorders for iPhone 4S have been the most for any new product that Apple has ever launched and we are thrilled that customers love iPhone 4S as much as we do,” said Philip Schiller, senior vice president of world-wide product marketing.

Online and telephone preorders for the iPhone 4S began in the predawn hours Friday, marking Apple’s first major product launch since Chief Executive Tim Cook took the company’s reins. This time around, the iPhone will be available from three U.S. carriers, including, for the first time, Sprint Nextel Corp.

AT&T Inc. said it had “more than 200,000 preorders in the first 12 hours alone” making the iPhone 4S “the most successful iPhone launch we’ve ever had.”

A Verizon Wireless spokesman said that executives were “pleased with the sales and the ordering process.”

U.S. Apple retail stores will start selling the iPhone 4S at 8 a.m. local time Friday. It will roll out to 22 more countries by the end of the month.

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