According to a report by Andrew Lyle in Neowin.net, "it's been estimated that Apple has sold roughly 1.5 million iPhone 4s in its first day, and according to an analyst at CNN.com, possibly even more. With that number, Apple has broke its original record for most iPhone sales in a single day."
Lyle said that the original iPhone sold one million units in 74 days while the iPhone 3G sold its first million units in a week and the iPhone 3GS surpassed the one million units sold mark on its opening weekend. With increasing sales volumes like these, the iPhone 4 would definitely show promising numbers.
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