Photo taken on Sept. 21, 2019 shows the iPhone 11 Pro at an Apple Store in New York, the United States. The iPhone 11, iPhone 11 Pro and iPhone 11 Pro Max went on sale in the United States on Friday. (Xinhua/Li Muzi)

A customer tries an iPhone 11 Pro Max at an Apple Store in New York, the United States, Sept. 21, 2019. The iPhone 11, iPhone 11 Pro and iPhone 11 Pro Max went on sale in the United States on Friday. (Xinhua/Li Muzi)

Photo taken on Sept. 21, 2019 shows the iPhone 11 Pro at an Apple Store in New York, the United States. The iPhone 11, iPhone 11 Pro and iPhone 11 Pro Max went on sale in the United States on Friday. (Xinhua/Li Muzi)

Photo taken on Sept. 21, 2019 shows the iPhone 11, iPhone 11 Pro Max and iPhone 11 Pro (R to L) at an Apple Store in New York, the United States. The iPhone 11, iPhone 11 Pro and iPhone 11 Pro Max went on sale in the United States on Friday. (Xinhua/Li Muzi)