The iPhone 4 finally launch in the U.S, and the crowd got crazy again! Just one day after the launch day, analysts are saying that Apple may have sold 1.5 million iPhones 4. If you've saw those lines surrounding Apple stores, you won't get any surprise when you see this number. The iPhone 4 is so hot that beside the over 600,000 pre-orders, there're 100,000 in-store sales and about 50,000 sales in other ways. We can see the iPhone fans around every Apple and AT&T stores across the country, so we might not need to suspect this number that analysts reported. Piper Jaffray Senior Research Analyst, Gene Munster, estimates that Apple’s iPhone 4 sales are between 1 million and 1.5 million units for the first day. “Our best guess is that Apple reserves about half of the units for pre-orders (mail delivery and in-store pick up) and half for in-store purchases (walk-ins), implying total sales for the launch (including the 600k already announced for online and first three days) of between 1.0m to 1.5m,” Munster said in a research note sent to clients.” If that number is true, then the iPhone 4 bore down the iPhone 3GS launch which sold 1 million units in one week. It seem like the iPhone 4 already got it's success.