People try new iPhones at an Apple Store in New York, the United States, Sept. 20, 2013. Apple's iPhone 5s and iPhone 5c went on sale in the U.S. on Friday. (Xinhua/Wang Lei) 

 A staff member prepares iPhones at an Apple Store in New York, the United States, Sept. 20, 2013. Apple's iPhone 5s and iPhone 5c went on sale in the U.S. on Friday. (Xinhua/Wang Lei)

People line up outside an Apple Store in New York, the United States, Sept. 20, 2013. Apple's iPhone 5s and iPhone 5c went on sale in the U.S. on Friday. (Xinhua/Wang Lei)

People try new iPhones at an Apple Store in New York, the United States, Sept. 20, 2013. Apple's iPhone 5s and iPhone 5c went on sale in the U.S. on Friday. (Xinhua/Wang Lei)

People line up outside an Apple Store in New York, the United States, Sept. 20, 2013. Apple's iPhone 5s and iPhone 5c went on sale in the U.S. on Friday. (Xinhua/Wang Lei)

People line up outside an Apple Store in New York, the United States, Sept. 20, 2013. Apple's iPhone 5s and iPhone 5c went on sale in the U.S. on Friday. (Xinhua/Wang Lei)