An iPhone 11 is on display at an Apple store as Apple's new line of products goes on sale in London, Britain, on Sept. 20, 2019. (Photos: Xinhua)

An iPhone 11's poster is seen at an Apple store as Apple's new line of products goes on sale in London, Britain, on Sept. 20, 2019.

A customer is shown new Apple devices by a staff member at an Apple store as Apple's new line of products goes on sale in London, Britain, on Sept. 20, 2019.

An iPhone 11 is on display at an Apple store as Apple's new line of products goes on sale in London, Britain, on Sept. 20, 2019.