Apple says it has sold 9 million iPhone 5s and 5c models since their launch on Friday. Here, staff members at an Apple retail store in Beijing cheer a customer after he bought a new iPhone. Andy Wong/AP hide caption

itoggle caption Andy Wong/AP

The new iPhone 5s with fingerprint-unlocking technology is displayed during an Apple product announcement Sept. 10 in Cupertino, Calif. Justin Sullivan/Getty Images hide caption

itoggle caption Justin Sullivan/Getty Images

The new iPhone 5c is displayed during an Apple product announcement Tuesday in Cupertino, Calif. Justin Sullivan/Getty Images hide caption

itoggle caption Justin Sullivan/Getty Images

Phil Schiller, Apple's senior vice president of worldwide marketing, speaks about fingerprint security features of the new iPhone 5s Tuesday in Cupertino, Calif. Justin Sullivan/Getty Images hide caption

itoggle caption Justin Sullivan/Getty Images

Phil Schiller, Apple's senior vice president of worldwide marketing, speaks about pricing for the new iPhone during an Apple product announcement on Tuesday. Justin Sullivan/Getty Images hide caption

itoggle caption Justin Sullivan/Getty Images

A woman looks at her phone in front of the Apple store in Shanghai. Apple unveiled a cheaper version of the iPhone on Tuesday. Aly Song/Reuters /Landov hide caption

itoggle caption Aly Song/Reuters /Landov

A salesperson demonstrates the Apple iPhone 4 in New Delhi, India. While mobile device use is growing rapidly in emerging markets, Apple's current product line may prove prohibitively expensive for many consumers. Manish Swarup/AP hide caption

itoggle caption Manish Swarup/AP

The iPhone app Electronic Smoke simulates smoking by detecting sound waves. When you breathe into the microphone, the virtual cigarette burns. Screenshot from Electronic Smoke. hide caption

itoggle caption Screenshot from Electronic Smoke.

Tim Cook of Apple announces that Verizon Wireless will carry the iPhone in January 2011. Apple is expected to unveil its latest iPhone on Wednesday. Mark Lennihan/AP hide caption

itoggle caption Mark Lennihan/AP